{"id":49,"date":"2021-06-22T15:30:14","date_gmt":"2021-06-22T15:30:14","guid":{"rendered":"https:\/\/courses.lumenlearning.com\/introstatscorequisite\/chapter\/tree-and-venn-diagrams\/"},"modified":"2023-12-05T09:04:26","modified_gmt":"2023-12-05T09:04:26","slug":"tree-and-venn-diagrams","status":"publish","type":"chapter","link":"https:\/\/courses.lumenlearning.com\/introstatscorequisite\/chapter\/tree-and-venn-diagrams\/","title":{"raw":"Diagrams for Probability Calculations","rendered":"Diagrams for Probability Calculations"},"content":{"raw":"<div class=\"textbox learning-objectives\">\r\n<h3>Learning Outcomes<\/h3>\r\n<ul id=\"list1523423\">\r\n \t<li>Draw a tree diagram to represent a given scenario<\/li>\r\n \t<li>Use a tree diagram to calculate probabilities<\/li>\r\n<\/ul>\r\n<\/div>\r\nSometimes, when the probability problems are complex, it can be helpful to graph the situation. Tree diagrams and Venn diagrams are two tools that can be used to visualize and solve conditional probabilities.\r\n<h2 data-type=\"title\">Tree Diagrams<\/h2>\r\nA <strong>tree diagram<\/strong> is a special type of graph used to determine the outcomes of an experiment. It consists of \"branches\" that are labeled with either frequencies or probabilities. Tree diagrams can make some probability problems easier to visualize and solve. The following example illustrates how to use a tree diagram.\r\n<div class=\"textbox exercises\">\r\n<h3>Example<\/h3>\r\nIn an urn, there are [latex]11[\/latex] balls. Three balls are red ([latex]R[\/latex]) and eight balls are blue ([latex]B[\/latex]). Draw two balls, one at a time, <strong>with replacement<\/strong>. \"With replacement\" means that you put the first ball back in the urn before you select the second ball. The tree diagram using frequencies that show all the possible outcomes follows.\r\n\r\n<img class=\"aligncenter wp-image-3514 size-full\" src=\"https:\/\/s3-us-west-2.amazonaws.com\/courses-images\/wp-content\/uploads\/sites\/5668\/2021\/06\/27161925\/14979036b70be20a0a5ea43a3e48c57e30d8620e2.jpeg\" alt=\"This is a tree diagram with branches showing frequencies of each draw. The first branch shows two lines: 8B and 3R. The second branch has a set of two lines (8B and 3R) for each line of the first branch. Multiply along each line to find 64BB, 24BR, 24RB, and 9RR.\" width=\"488\" height=\"268\" \/>\r\n<figure class=\"ui-has-child-figcaption\"><figcaption>Total = [latex]64 + 24 + 24 + 9 = 121[\/latex]<\/figcaption><\/figure>\r\nThe first set of branches represents the first draw. The second set of branches represents the second draw. Each of the outcomes is distinct. In fact, we can list each red ball as [latex]R1[\/latex], [latex]R2[\/latex], and [latex]R3[\/latex] and each blue ball as [latex]B1[\/latex], [latex]B2[\/latex], [latex]B3[\/latex], [latex]B4[\/latex], [latex]B5[\/latex], [latex]B6[\/latex], [latex]B7[\/latex], and [latex]B8[\/latex]. Then the nine [latex]RR[\/latex] outcomes can be written as:\r\n[latex]R1R1;\\,\\, R1R2;\\,\\, R1R3;\\,\\, R2R1;\\,\\, R2R2;\\,\\, R2R3;\\,\\, R3R1;\\,\\, R3R2;\\,\\, R3R3[\/latex]\r\nThe other outcomes are similar.\r\n\r\nThere are a total of [latex]11[\/latex] balls in the urn. Draw two balls, one at a time, with replacement. There are [latex]11(11) = 121[\/latex] outcomes, the size of the <strong>sample space<\/strong>.\r\n<ol style=\"list-style-type: lower-alpha;\">\r\n \t<li>List the [latex]24[\/latex] [latex]BR[\/latex] outcomes: [latex]B1R1[\/latex], [latex]B1R2[\/latex], [latex]B1R3[\/latex], ...<\/li>\r\n \t<li>Using the tree diagram, calculate [latex]P(RR)[\/latex].<\/li>\r\n \t<li>Using the tree diagram, calculate [latex]P(RB \\text{ OR } BR)[\/latex].<\/li>\r\n \t<li>Using the tree diagram, calculate [latex]P(R \\text{ on 1st draw AND } B \\text { on 2nd draw})[\/latex].<\/li>\r\n \t<li>Using the tree diagram, calculate [latex]P(R \\text{ on 2nd draw GIVEN } B \\text { on 1st draw})[\/latex].<\/li>\r\n \t<li>Using the tree diagram, calculate [latex]P(BB)[\/latex].<\/li>\r\n \t<li>Using the tree diagram, calculate [latex]P(B \\text{ on the 2nd draw given } R \\text { on the first draw})[\/latex].<\/li>\r\n<\/ol>\r\n[reveal-answer q=\"124076\"]Show Solution[\/reveal-answer]\r\n[hidden-answer a=\"124076\"]\r\n<ol style=\"list-style-type: lower-alpha;\">\r\n \t<li style=\"list-style-type: none;\">\r\n<ol style=\"list-style-type: lower-alpha;\">\r\n \t<li>[latex]B1R1; B1R2; B1R3; B2R1; B2R2; B2R3; B3R1; B3R2; B3R3; B4R1; B4R2;[\/latex] [latex] B4R3; B5R1; B5R2; B5R3; B6R1; B6R2; B6R3; B7R1; B7R2; B7R3; B8R1; B8R2; B8R3 [\/latex]<\/li>\r\n \t<li>[latex]P(RR) = \\frac{3}{11}\\frac{3}{11} = \\frac{9}{121}[\/latex]<\/li>\r\n \t<li>[latex]P(RB \\text{ OR } BR) = \\frac{3}{11}\\frac{8}{11} + \\frac{8}{11}\\frac{3}{11} = \\frac{48}{121}[\/latex]<\/li>\r\n \t<li>[latex]P(R \\text{ on 1st draw AND } B \\text{ on 2nd draw}) = P(RB) = \\frac{3}{11}\\frac{8}{11} = \\frac{24}{121}[\/latex]<\/li>\r\n \t<li>[latex]P(R \\text{ on 2nd draw GIVEN } B \\text{ on 1st draw}) = P(R \\text{ on 2nd }|B \\text{ on 1st }) = \\frac{24}{88} = \\frac{3}{11}.[\/latex] This problem is a conditional one. The sample space has been reduced to those outcomes that already have a blue on the first draw. There are [latex]24 + 64 = 88[\/latex] possible outcomes ([latex]24 BR \\text{ and } 64 BB[\/latex]). Twenty-four of the [latex]88[\/latex] possible outcomes are [latex]BR[\/latex]. [latex]\\frac{24}{88} = \\frac{3}{11}[\/latex].<\/li>\r\n \t<li>[latex]P(BB) = \\frac{64}{121}[\/latex]<\/li>\r\n \t<li>[latex]P(B \\text{ on 2nd draw }|R \\text{ on 1st draw}) = \\frac{8}{11}[\/latex] There are [latex]9 + 24[\/latex] outcomes that have [latex]R[\/latex] on the first draw [latex](9 RR \\text{ and } 24 RB)[\/latex]. The sample space is then [latex]9 + 24 = 33[\/latex]. [latex]24[\/latex] of the [latex]33[\/latex] outcomes have [latex]B[\/latex] on the second draw. The probability is then [latex]\\frac{24}{33}[\/latex].<\/li>\r\n<\/ol>\r\n<\/li>\r\n<\/ol>\r\n[\/hidden-answer]\r\n\r\n<\/div>\r\n<div class=\"textbox key-takeaways\">\r\n<h3>Try It<\/h3>\r\nIn a standard deck, there are 52 cards. Twelve cards are face cards (event [latex]F[\/latex]) and 40 cards are not face cards (event [latex]N[\/latex]). Draw two cards, one at a time, with replacement. All possible outcomes are shown in the tree diagram as frequencies. Using the tree diagram, calculate [latex]P(FF)[\/latex].\r\n\r\n&nbsp;\r\n\r\n<img class=\"alignnone wp-image-194 size-full\" src=\"https:\/\/s3-us-west-2.amazonaws.com\/courses-images\/wp-content\/uploads\/sites\/5668\/2021\/06\/13160455\/49785456144016a3634f73c2ac4f273c54ed6269.jpeg\" alt=\"This is a tree diagram with branches showing frequencies of each draw. The first branch shows two lines: 12F and 40N. The second branch has a set of two lines (12F and 40N) for each line of the first branch. Multiply along each line to find 144FF, 480FN, 480NF, and 1,600NN.\" width=\"488\" height=\"271\" \/>\r\n\r\n<\/div>\r\n<div class=\"textbox exercises\">\r\n<h3>Example<\/h3>\r\nAn urn has three red marbles and eight blue marbles in it. Draw two marbles, one at a time, this time without replacement, from the urn. <strong>Without replacement<\/strong>\u00a0means that you do not put the first ball back before you select the second marble. Following is a tree diagram for this situation. The branches are labeled with probabilities instead of frequencies. The numbers at the ends of the branches are calculated by multiplying the numbers on the two corresponding branches, for example, [latex](\\frac{3}{11})(\\frac{2}{10})=(\\frac{6}{110})[\/latex].\r\n<figure id=\"element-325a\" class=\"ui-has-child-figcaption\"><span id=\"id47078287\" data-type=\"media\" data-alt=\"This is a tree diagram with branches showing probabilities of each draw. The first branch shows 2 lines: B 8\/11 and R 3\/11. The second branch has a set of 2 lines for each first branch line. Below B 8\/11 are B 7\/10 and R 3\/10. Below R 3\/11 are B 8\/10 and R 2\/10. Multiply along each line to find BB 56\/110, BR 24\/110, RB 24\/110, and RR 6\/110.\"><img src=\"https:\/\/s3-us-west-2.amazonaws.com\/courses-images\/wp-content\/uploads\/sites\/132\/2016\/04\/21214405\/fig-ch03_07_02.jpg\" alt=\"This is a tree diagram with branches showing probabilities of each draw. The first branch shows 2 lines: B 8\/11 and R 3\/11. The second branch has a set of 2 lines for each first branch line. Below B 8\/11 are B 7\/10 and R 3\/10. Below R 3\/11 are B 8\/10 and R 2\/10. Multiply along each line to find BB 56\/110, BR 24\/110, RB 24\/110, and RR 6\/110.\" width=\"400\" data-media-type=\"image\/jpg\" \/><\/span><\/figure>\r\n<figure class=\"ui-has-child-figcaption\"><figcaption>Total = [latex]\\displaystyle\\frac{{56+24+24+6}}{{110}}=\\frac{{110}}{{110}}=1[\/latex]<\/figcaption><\/figure>\r\n<div class=\"textbox shaded\">\r\n<h3>Note<\/h3>\r\nIf you draw a red on the first draw from the three red possibilities, there are two red marbles left to draw on the second draw. You do not put back or replace the first marble after you have drawn it. You draw <strong>without replacement<\/strong>, so that on the second draw there are ten marbles left in the urn.\r\n\r\n<\/div>\r\nCalculate the following probabilities using the tree diagram.\r\n\r\na. [latex]P(RR)[\/latex] = ________\r\n\r\nb. Fill in the blanks:\r\n[latex]P(RB \\text{ OR } BR = (\\frac{3}{11})(\\frac{8}{10}) + (\\rule{1cm}{0.15mm})(\\rule{1cm}{0.15mm}) = \\frac{48}{110}[\/latex]\r\n\r\nc. [latex]P(R \\text{ on 2nd|}B \\text{ on 1st}) =[\/latex]\r\n\r\nd. Fill in the blanks.\r\n\r\n[latex]P(R \\text{ on 1st AND } B \\text{ on 2nd }) = P(RB) = (\\rule{1cm}{0.15mm})(\\rule{1cm}{0.15mm})= \\frac{24}{110}[\/latex]\r\n\r\ne. Find [latex]P(BB)[\/latex].\r\n\r\nf. Find [latex]P(B \\text{ on 2nd|}R \\text{ on 1st})[\/latex].\r\n\r\n[reveal-answer q=\"124075\"]Show Solution[\/reveal-answer]\r\n[hidden-answer a=\"124075\"]\r\n\r\na. [latex]P(RR) = (\\frac{3}{11})(\\frac{2}{10}) = \\frac{6}{110}[\/latex]\r\n\r\nb. [latex]P(RB \\text{ OR } BR = (\\frac{3}{11})(\\frac{8}{10}) + (\\frac{8}{11})(\\frac{3}{10}) = \\frac{48}{110}[\/latex]\r\n\r\nc. [latex]P(R \\text{ on 2nd|}B \\text{ on 1st }) =\\frac{3}{10}[\/latex]\r\n\r\nd. [latex]P(R \\text{ on 1st AND } B \\text{ on 2nd }) = P(RB) = (\\frac{3}{11})(\\frac{8}{10})= \\frac{24}{110}[\/latex]\r\n\r\ne. [latex]P(BB) = (\\frac{8}{11})(\\frac{7}{10})[\/latex]\r\n\r\nf. Using the tree diagram, [latex]P(B \\text{ on 2nd|}R \\text{ on 1st }) = P(R|B) = (\\frac{8}{10})[\/latex]\r\n\r\n[\/hidden-answer]\r\n\r\nIf we are using probabilities, we can label the tree in the following general way.\r\n\r\n<span data-type=\"media\" data-alt=\"This is a tree diagram for a two-step experiment. The first branch shows first outcome: P(B) and P(R). The second branch has a set of 2 lines for each line of the first branch: the probability of B given B = P(BB), the probability of R given B = P(RB), the probability of B given R = P(BR), and the probability of R given R = P(RR).\" data-display=\"block\"><img src=\"https:\/\/s3-us-west-2.amazonaws.com\/courses-images\/wp-content\/uploads\/sites\/132\/2016\/04\/21214407\/fig-ch03_07_03N.jpg\" alt=\"This is a tree diagram for a two-step experiment. The first branch shows first outcome: P(B) and P(R). The second branch has a set of 2 lines for each line of the first branch: the probability of B given B = P(BB), the probability of R given B = P(RB), the probability of B given R = P(BR), and the probability of R given R = P(RR).\" width=\"400\" data-media-type=\"image\/jpg\" \/><\/span>\r\n<ul>\r\n \t<li>[latex]P(RR)[\/latex] here means [latex]P(R \\text{ on 2nd|}R \\text{ on 1st})[\/latex]<\/li>\r\n \t<li>[latex]P(BR)[\/latex] here means [latex]P(B \\text{ on 2nd|}R \\text{ on 1st})[\/latex]<\/li>\r\n \t<li>[latex]P(RB)[\/latex] here means [latex]P(R \\text{ on 2nd|}B \\text{ on 1st})[\/latex]<\/li>\r\n \t<li>[latex]P(BB)[\/latex] here means [latex]P(B \\text{ on 2nd|}B \\text{ on 1st})[\/latex]<\/li>\r\n<\/ul>\r\n<\/div>\r\n<div class=\"textbox key-takeaways\">\r\n<h3>Try It<\/h3>\r\nIn a standard deck, there are 52 cards. Twelve cards are face cards [latex](F)[\/latex] and 40 cards are not face cards [latex](N)[\/latex]. Draw two cards, one at a time, without replacement. The tree diagram is labeled with all possible probabilities.\r\n\r\n<img class=\"alignnone wp-image-201 size-full\" src=\"https:\/\/s3-us-west-2.amazonaws.com\/courses-images\/wp-content\/uploads\/sites\/5668\/2021\/06\/13162157\/a147e103bb8e17ec60e8ff5d439614b3f7eae9d7.jpeg\" alt=\"This is a tree diagram with branches showing frequencies of each draw. The first branch shows 2 lines: F 12\/52 and N 40\/52. The second branch has a set of 2 lines (F 11\/52 and N 40\/51) for each line of the first branch. Multiply along each line to find FF 121\/2652, FN 480\/2652, NF 480\/2652, and NN 1560\/2652.\" width=\"487\" height=\"398\" \/>\r\n<ol id=\"fs-idm44947616\" type=\"a\">\r\n \t<li>Find [latex]P(FN \\ \\mathrm{OR} \\ NF)[\/latex].<\/li>\r\n \t<li>Find [latex]P(N|F)[\/latex].<\/li>\r\n \t<li>Find [latex]P[\/latex](at most one face card).\r\nHint: \"At most one face card\" means zero or one face card.<\/li>\r\n \t<li>Find [latex]P[\/latex](at least on face card).\r\nHint: \"At least one face card\" means one or two face cards.<\/li>\r\n<\/ol>\r\n&nbsp;\r\n\r\n<\/div>\r\n<div class=\"textbox exercises\">\r\n<h3>Example<\/h3>\r\nA litter of kittens available for adoption at the Humane Society has four tabby kittens and five black kittens. A family comes in and randomly selects two kittens (without replacement) for adoption.\r\n\r\n<img class=\"alignnone wp-image-208 size-full\" src=\"https:\/\/s3-us-west-2.amazonaws.com\/courses-images\/wp-content\/uploads\/sites\/5668\/2021\/06\/13163847\/501577bbb82c4847022a4b4da37bff2b8d81223d.jpeg\" alt=\"This is a tree diagram with branches showing probabilities of kitten choices. The first branch shows two lines: T 4\/9 and B 5\/9. The second branch has a set of 2 lines for each first branch line. Below T 4\/9 are T 3\/8 and B 5\/8. Below B 5\/9 are T 4\/8 and B 4\/8. Multiply along each line to find probabilities of possible combinations.\" width=\"487\" height=\"356\" \/>\r\n<ol style=\"list-style-type: lower-alpha;\">\r\n \t<li>What is the probability that both kittens are tabby? a.\u00a0<span style=\"font-size: 14px; white-space: nowrap;\">[latex]( \\frac{1}{2} )( \\frac{1}{2} ) [\/latex]<\/span>\u00a0 b.\u00a0<span style=\"font-size: 14px; white-space: nowrap;\">[latex]( \\frac{4}{9} )( \\frac{4}{9} ) [\/latex] c.\u00a0<\/span><span style=\"font-size: 0.9em;\">[latex]( \\frac{4}{9} )( \\frac{3}{8} )[\/latex] d.\u00a0<\/span>[latex] ( \\frac{4}{9} )( \\frac{5}{9} )[\/latex]\r\n<math xmlns=\"http:\/\/www.w3.org\/1998\/Math\/MathML\" display=\"inline\"><semantics><annotation-xml encoding=\"MathML-Content\"><semantics><\/semantics><\/annotation-xml><\/semantics><\/math><\/li>\r\n \t<li>\r\n<p style=\"orphans: 1;\"><span style=\"font-size: 0.9em;\">What is the probability that one kitten of each coloring is selected? a.\u00a0<\/span><span style=\"font-size: 0.9em;\">[latex]( \\frac{4}{9} )( \\frac{5}{9} )[\/latex] b.<\/span><span style=\"font-size: 0.9em;\">\u00a0[latex]( \\frac{4}{9} )( \\frac{5}{8} )[\/latex]\u00a0<\/span>c.<span style=\"font-size: 14px; white-space: nowrap;\">\u00a0<span style=\"font-size: 0.9em;\">[latex]( \\frac{4}{9} )( \\frac{5}{9} ) + ( \\frac{5}{9} )( \\frac{4}{9} )[\/latex]\u00a0<\/span><\/span><span style=\"font-size: 0.9em;\">d.<\/span><span style=\"font-size: 14px; white-space: nowrap;\">\u00a0<span style=\"font-size: 0.9em;\">[latex]( \\frac{4}{9} )( \\frac{5}{8} ) + ( \\frac{5}{9} )( \\frac{4}{8} )[\/latex]<\/span><\/span><\/p>\r\n<\/li>\r\n \t<li>What is the probability that a tabby is chosen as the second kitten when a black kitten was chosen as the first?<\/li>\r\n \t<li>What is the probability of choosing two kittens of the same color?<\/li>\r\n<\/ol>\r\n[reveal-answer q=\"478259\"]Show Solution[\/reveal-answer]\r\n[hidden-answer a=\"478259\"]\r\n\r\na. c, b. d, c. <span style=\"font-size: 14px; white-space: nowrap;\">[latex]\\frac{4}{8}[\/latex]<\/span>, d. <span style=\"font-size: 14px; white-space: nowrap;\">[latex]\\frac{32}{72}[\/latex]<\/span>\r\n\r\n[\/hidden-answer]\r\n\r\n<\/div>\r\n<div class=\"textbox key-takeaways\">\r\n<h3>Try It<\/h3>\r\nSuppose there are four red balls and three yellow balls in a box. Two balls are drawn from the box without replacement. What is the probability that one ball of each coloring is selected?\r\n\r\n<\/div>\r\nhttps:\/\/youtu.be\/Zxvc6iPKdec\r\n\r\n<section class=\"ui-body\">\r\n<div data-type=\"newline\" data-count=\"2\"><\/div>\r\n<!-- pb_fixme -->\r\n\r\n<\/section>","rendered":"<div class=\"textbox learning-objectives\">\n<h3>Learning Outcomes<\/h3>\n<ul id=\"list1523423\">\n<li>Draw a tree diagram to represent a given scenario<\/li>\n<li>Use a tree diagram to calculate probabilities<\/li>\n<\/ul>\n<\/div>\n<p>Sometimes, when the probability problems are complex, it can be helpful to graph the situation. Tree diagrams and Venn diagrams are two tools that can be used to visualize and solve conditional probabilities.<\/p>\n<h2 data-type=\"title\">Tree Diagrams<\/h2>\n<p>A <strong>tree diagram<\/strong> is a special type of graph used to determine the outcomes of an experiment. It consists of &#8220;branches&#8221; that are labeled with either frequencies or probabilities. Tree diagrams can make some probability problems easier to visualize and solve. The following example illustrates how to use a tree diagram.<\/p>\n<div class=\"textbox exercises\">\n<h3>Example<\/h3>\n<p>In an urn, there are [latex]11[\/latex] balls. Three balls are red ([latex]R[\/latex]) and eight balls are blue ([latex]B[\/latex]). Draw two balls, one at a time, <strong>with replacement<\/strong>. &#8220;With replacement&#8221; means that you put the first ball back in the urn before you select the second ball. The tree diagram using frequencies that show all the possible outcomes follows.<\/p>\n<p><img loading=\"lazy\" decoding=\"async\" class=\"aligncenter wp-image-3514 size-full\" src=\"https:\/\/s3-us-west-2.amazonaws.com\/courses-images\/wp-content\/uploads\/sites\/5668\/2021\/06\/27161925\/14979036b70be20a0a5ea43a3e48c57e30d8620e2.jpeg\" alt=\"This is a tree diagram with branches showing frequencies of each draw. The first branch shows two lines: 8B and 3R. The second branch has a set of two lines (8B and 3R) for each line of the first branch. Multiply along each line to find 64BB, 24BR, 24RB, and 9RR.\" width=\"488\" height=\"268\" \/><\/p>\n<figure class=\"ui-has-child-figcaption\"><figcaption>Total = [latex]64 + 24 + 24 + 9 = 121[\/latex]<\/figcaption><\/figure>\n<p>The first set of branches represents the first draw. The second set of branches represents the second draw. Each of the outcomes is distinct. In fact, we can list each red ball as [latex]R1[\/latex], [latex]R2[\/latex], and [latex]R3[\/latex] and each blue ball as [latex]B1[\/latex], [latex]B2[\/latex], [latex]B3[\/latex], [latex]B4[\/latex], [latex]B5[\/latex], [latex]B6[\/latex], [latex]B7[\/latex], and [latex]B8[\/latex]. Then the nine [latex]RR[\/latex] outcomes can be written as:<br \/>\n[latex]R1R1;\\,\\, R1R2;\\,\\, R1R3;\\,\\, R2R1;\\,\\, R2R2;\\,\\, R2R3;\\,\\, R3R1;\\,\\, R3R2;\\,\\, R3R3[\/latex]<br \/>\nThe other outcomes are similar.<\/p>\n<p>There are a total of [latex]11[\/latex] balls in the urn. Draw two balls, one at a time, with replacement. There are [latex]11(11) = 121[\/latex] outcomes, the size of the <strong>sample space<\/strong>.<\/p>\n<ol style=\"list-style-type: lower-alpha;\">\n<li>List the [latex]24[\/latex] [latex]BR[\/latex] outcomes: [latex]B1R1[\/latex], [latex]B1R2[\/latex], [latex]B1R3[\/latex], &#8230;<\/li>\n<li>Using the tree diagram, calculate [latex]P(RR)[\/latex].<\/li>\n<li>Using the tree diagram, calculate [latex]P(RB \\text{ OR } BR)[\/latex].<\/li>\n<li>Using the tree diagram, calculate [latex]P(R \\text{ on 1st draw AND } B \\text { on 2nd draw})[\/latex].<\/li>\n<li>Using the tree diagram, calculate [latex]P(R \\text{ on 2nd draw GIVEN } B \\text { on 1st draw})[\/latex].<\/li>\n<li>Using the tree diagram, calculate [latex]P(BB)[\/latex].<\/li>\n<li>Using the tree diagram, calculate [latex]P(B \\text{ on the 2nd draw given } R \\text { on the first draw})[\/latex].<\/li>\n<\/ol>\n<div class=\"qa-wrapper\" style=\"display: block\"><span class=\"show-answer collapsed\" style=\"cursor: pointer\" data-target=\"q124076\">Show Solution<\/span><\/p>\n<div id=\"q124076\" class=\"hidden-answer\" style=\"display: none\">\n<ol style=\"list-style-type: lower-alpha;\">\n<li style=\"list-style-type: none;\">\n<ol style=\"list-style-type: lower-alpha;\">\n<li>[latex]B1R1; B1R2; B1R3; B2R1; B2R2; B2R3; B3R1; B3R2; B3R3; B4R1; B4R2;[\/latex] [latex]B4R3; B5R1; B5R2; B5R3; B6R1; B6R2; B6R3; B7R1; B7R2; B7R3; B8R1; B8R2; B8R3[\/latex]<\/li>\n<li>[latex]P(RR) = \\frac{3}{11}\\frac{3}{11} = \\frac{9}{121}[\/latex]<\/li>\n<li>[latex]P(RB \\text{ OR } BR) = \\frac{3}{11}\\frac{8}{11} + \\frac{8}{11}\\frac{3}{11} = \\frac{48}{121}[\/latex]<\/li>\n<li>[latex]P(R \\text{ on 1st draw AND } B \\text{ on 2nd draw}) = P(RB) = \\frac{3}{11}\\frac{8}{11} = \\frac{24}{121}[\/latex]<\/li>\n<li>[latex]P(R \\text{ on 2nd draw GIVEN } B \\text{ on 1st draw}) = P(R \\text{ on 2nd }|B \\text{ on 1st }) = \\frac{24}{88} = \\frac{3}{11}.[\/latex] This problem is a conditional one. The sample space has been reduced to those outcomes that already have a blue on the first draw. There are [latex]24 + 64 = 88[\/latex] possible outcomes ([latex]24 BR \\text{ and } 64 BB[\/latex]). Twenty-four of the [latex]88[\/latex] possible outcomes are [latex]BR[\/latex]. [latex]\\frac{24}{88} = \\frac{3}{11}[\/latex].<\/li>\n<li>[latex]P(BB) = \\frac{64}{121}[\/latex]<\/li>\n<li>[latex]P(B \\text{ on 2nd draw }|R \\text{ on 1st draw}) = \\frac{8}{11}[\/latex] There are [latex]9 + 24[\/latex] outcomes that have [latex]R[\/latex] on the first draw [latex](9 RR \\text{ and } 24 RB)[\/latex]. The sample space is then [latex]9 + 24 = 33[\/latex]. [latex]24[\/latex] of the [latex]33[\/latex] outcomes have [latex]B[\/latex] on the second draw. The probability is then [latex]\\frac{24}{33}[\/latex].<\/li>\n<\/ol>\n<\/li>\n<\/ol>\n<\/div>\n<\/div>\n<\/div>\n<div class=\"textbox key-takeaways\">\n<h3>Try It<\/h3>\n<p>In a standard deck, there are 52 cards. Twelve cards are face cards (event [latex]F[\/latex]) and 40 cards are not face cards (event [latex]N[\/latex]). Draw two cards, one at a time, with replacement. All possible outcomes are shown in the tree diagram as frequencies. Using the tree diagram, calculate [latex]P(FF)[\/latex].<\/p>\n<p>&nbsp;<\/p>\n<p><img loading=\"lazy\" decoding=\"async\" class=\"alignnone wp-image-194 size-full\" src=\"https:\/\/s3-us-west-2.amazonaws.com\/courses-images\/wp-content\/uploads\/sites\/5668\/2021\/06\/13160455\/49785456144016a3634f73c2ac4f273c54ed6269.jpeg\" alt=\"This is a tree diagram with branches showing frequencies of each draw. The first branch shows two lines: 12F and 40N. The second branch has a set of two lines (12F and 40N) for each line of the first branch. Multiply along each line to find 144FF, 480FN, 480NF, and 1,600NN.\" width=\"488\" height=\"271\" \/><\/p>\n<\/div>\n<div class=\"textbox exercises\">\n<h3>Example<\/h3>\n<p>An urn has three red marbles and eight blue marbles in it. Draw two marbles, one at a time, this time without replacement, from the urn. <strong>Without replacement<\/strong>\u00a0means that you do not put the first ball back before you select the second marble. Following is a tree diagram for this situation. The branches are labeled with probabilities instead of frequencies. The numbers at the ends of the branches are calculated by multiplying the numbers on the two corresponding branches, for example, [latex](\\frac{3}{11})(\\frac{2}{10})=(\\frac{6}{110})[\/latex].<\/p>\n<figure id=\"element-325a\" class=\"ui-has-child-figcaption\"><span id=\"id47078287\" data-type=\"media\" data-alt=\"This is a tree diagram with branches showing probabilities of each draw. The first branch shows 2 lines: B 8\/11 and R 3\/11. The second branch has a set of 2 lines for each first branch line. Below B 8\/11 are B 7\/10 and R 3\/10. Below R 3\/11 are B 8\/10 and R 2\/10. Multiply along each line to find BB 56\/110, BR 24\/110, RB 24\/110, and RR 6\/110.\"><img decoding=\"async\" src=\"https:\/\/s3-us-west-2.amazonaws.com\/courses-images\/wp-content\/uploads\/sites\/132\/2016\/04\/21214405\/fig-ch03_07_02.jpg\" alt=\"This is a tree diagram with branches showing probabilities of each draw. The first branch shows 2 lines: B 8\/11 and R 3\/11. The second branch has a set of 2 lines for each first branch line. Below B 8\/11 are B 7\/10 and R 3\/10. Below R 3\/11 are B 8\/10 and R 2\/10. Multiply along each line to find BB 56\/110, BR 24\/110, RB 24\/110, and RR 6\/110.\" width=\"400\" data-media-type=\"image\/jpg\" \/><\/span><\/figure>\n<figure class=\"ui-has-child-figcaption\"><figcaption>Total = [latex]\\displaystyle\\frac{{56+24+24+6}}{{110}}=\\frac{{110}}{{110}}=1[\/latex]<\/figcaption><\/figure>\n<div class=\"textbox shaded\">\n<h3>Note<\/h3>\n<p>If you draw a red on the first draw from the three red possibilities, there are two red marbles left to draw on the second draw. You do not put back or replace the first marble after you have drawn it. You draw <strong>without replacement<\/strong>, so that on the second draw there are ten marbles left in the urn.<\/p>\n<\/div>\n<p>Calculate the following probabilities using the tree diagram.<\/p>\n<p>a. [latex]P(RR)[\/latex] = ________<\/p>\n<p>b. Fill in the blanks:<br \/>\n[latex]P(RB \\text{ OR } BR = (\\frac{3}{11})(\\frac{8}{10}) + (\\rule{1cm}{0.15mm})(\\rule{1cm}{0.15mm}) = \\frac{48}{110}[\/latex]<\/p>\n<p>c. [latex]P(R \\text{ on 2nd|}B \\text{ on 1st}) =[\/latex]<\/p>\n<p>d. Fill in the blanks.<\/p>\n<p>[latex]P(R \\text{ on 1st AND } B \\text{ on 2nd }) = P(RB) = (\\rule{1cm}{0.15mm})(\\rule{1cm}{0.15mm})= \\frac{24}{110}[\/latex]<\/p>\n<p>e. Find [latex]P(BB)[\/latex].<\/p>\n<p>f. Find [latex]P(B \\text{ on 2nd|}R \\text{ on 1st})[\/latex].<\/p>\n<div class=\"qa-wrapper\" style=\"display: block\"><span class=\"show-answer collapsed\" style=\"cursor: pointer\" data-target=\"q124075\">Show Solution<\/span><\/p>\n<div id=\"q124075\" class=\"hidden-answer\" style=\"display: none\">\n<p>a. [latex]P(RR) = (\\frac{3}{11})(\\frac{2}{10}) = \\frac{6}{110}[\/latex]<\/p>\n<p>b. [latex]P(RB \\text{ OR } BR = (\\frac{3}{11})(\\frac{8}{10}) + (\\frac{8}{11})(\\frac{3}{10}) = \\frac{48}{110}[\/latex]<\/p>\n<p>c. [latex]P(R \\text{ on 2nd|}B \\text{ on 1st }) =\\frac{3}{10}[\/latex]<\/p>\n<p>d. [latex]P(R \\text{ on 1st AND } B \\text{ on 2nd }) = P(RB) = (\\frac{3}{11})(\\frac{8}{10})= \\frac{24}{110}[\/latex]<\/p>\n<p>e. [latex]P(BB) = (\\frac{8}{11})(\\frac{7}{10})[\/latex]<\/p>\n<p>f. Using the tree diagram, [latex]P(B \\text{ on 2nd|}R \\text{ on 1st }) = P(R|B) = (\\frac{8}{10})[\/latex]<\/p>\n<\/div>\n<\/div>\n<p>If we are using probabilities, we can label the tree in the following general way.<\/p>\n<p><span data-type=\"media\" data-alt=\"This is a tree diagram for a two-step experiment. The first branch shows first outcome: P(B) and P(R). The second branch has a set of 2 lines for each line of the first branch: the probability of B given B = P(BB), the probability of R given B = P(RB), the probability of B given R = P(BR), and the probability of R given R = P(RR).\" data-display=\"block\"><img decoding=\"async\" src=\"https:\/\/s3-us-west-2.amazonaws.com\/courses-images\/wp-content\/uploads\/sites\/132\/2016\/04\/21214407\/fig-ch03_07_03N.jpg\" alt=\"This is a tree diagram for a two-step experiment. The first branch shows first outcome: P(B) and P(R). The second branch has a set of 2 lines for each line of the first branch: the probability of B given B = P(BB), the probability of R given B = P(RB), the probability of B given R = P(BR), and the probability of R given R = P(RR).\" width=\"400\" data-media-type=\"image\/jpg\" \/><\/span><\/p>\n<ul>\n<li>[latex]P(RR)[\/latex] here means [latex]P(R \\text{ on 2nd|}R \\text{ on 1st})[\/latex]<\/li>\n<li>[latex]P(BR)[\/latex] here means [latex]P(B \\text{ on 2nd|}R \\text{ on 1st})[\/latex]<\/li>\n<li>[latex]P(RB)[\/latex] here means [latex]P(R \\text{ on 2nd|}B \\text{ on 1st})[\/latex]<\/li>\n<li>[latex]P(BB)[\/latex] here means [latex]P(B \\text{ on 2nd|}B \\text{ on 1st})[\/latex]<\/li>\n<\/ul>\n<\/div>\n<div class=\"textbox key-takeaways\">\n<h3>Try It<\/h3>\n<p>In a standard deck, there are 52 cards. Twelve cards are face cards [latex](F)[\/latex] and 40 cards are not face cards [latex](N)[\/latex]. Draw two cards, one at a time, without replacement. The tree diagram is labeled with all possible probabilities.<\/p>\n<p><img loading=\"lazy\" decoding=\"async\" class=\"alignnone wp-image-201 size-full\" src=\"https:\/\/s3-us-west-2.amazonaws.com\/courses-images\/wp-content\/uploads\/sites\/5668\/2021\/06\/13162157\/a147e103bb8e17ec60e8ff5d439614b3f7eae9d7.jpeg\" alt=\"This is a tree diagram with branches showing frequencies of each draw. The first branch shows 2 lines: F 12\/52 and N 40\/52. The second branch has a set of 2 lines (F 11\/52 and N 40\/51) for each line of the first branch. Multiply along each line to find FF 121\/2652, FN 480\/2652, NF 480\/2652, and NN 1560\/2652.\" width=\"487\" height=\"398\" \/><\/p>\n<ol id=\"fs-idm44947616\" type=\"a\">\n<li>Find [latex]P(FN \\ \\mathrm{OR} \\ NF)[\/latex].<\/li>\n<li>Find [latex]P(N|F)[\/latex].<\/li>\n<li>Find [latex]P[\/latex](at most one face card).<br \/>\nHint: &#8220;At most one face card&#8221; means zero or one face card.<\/li>\n<li>Find [latex]P[\/latex](at least on face card).<br \/>\nHint: &#8220;At least one face card&#8221; means one or two face cards.<\/li>\n<\/ol>\n<p>&nbsp;<\/p>\n<\/div>\n<div class=\"textbox exercises\">\n<h3>Example<\/h3>\n<p>A litter of kittens available for adoption at the Humane Society has four tabby kittens and five black kittens. A family comes in and randomly selects two kittens (without replacement) for adoption.<\/p>\n<p><img loading=\"lazy\" decoding=\"async\" class=\"alignnone wp-image-208 size-full\" src=\"https:\/\/s3-us-west-2.amazonaws.com\/courses-images\/wp-content\/uploads\/sites\/5668\/2021\/06\/13163847\/501577bbb82c4847022a4b4da37bff2b8d81223d.jpeg\" alt=\"This is a tree diagram with branches showing probabilities of kitten choices. The first branch shows two lines: T 4\/9 and B 5\/9. The second branch has a set of 2 lines for each first branch line. Below T 4\/9 are T 3\/8 and B 5\/8. Below B 5\/9 are T 4\/8 and B 4\/8. Multiply along each line to find probabilities of possible combinations.\" width=\"487\" height=\"356\" \/><\/p>\n<ol style=\"list-style-type: lower-alpha;\">\n<li>What is the probability that both kittens are tabby? a.\u00a0<span style=\"font-size: 14px; white-space: nowrap;\">[latex]( \\frac{1}{2} )( \\frac{1}{2} )[\/latex]<\/span>\u00a0 b.\u00a0<span style=\"font-size: 14px; white-space: nowrap;\">[latex]( \\frac{4}{9} )( \\frac{4}{9} )[\/latex] c.\u00a0<\/span><span style=\"font-size: 0.9em;\">[latex]( \\frac{4}{9} )( \\frac{3}{8} )[\/latex] d.\u00a0<\/span>[latex]( \\frac{4}{9} )( \\frac{5}{9} )[\/latex]<br \/>\n<math xmlns=\"http:\/\/www.w3.org\/1998\/Math\/MathML\" display=\"inline\"><semantics><annotation-xml encoding=\"MathML-Content\"><semantics><\/semantics><\/annotation-xml><\/semantics><\/math><\/li>\n<li>\n<p style=\"orphans: 1;\"><span style=\"font-size: 0.9em;\">What is the probability that one kitten of each coloring is selected? a.\u00a0<\/span><span style=\"font-size: 0.9em;\">[latex]( \\frac{4}{9} )( \\frac{5}{9} )[\/latex] b.<\/span><span style=\"font-size: 0.9em;\">\u00a0[latex]( \\frac{4}{9} )( \\frac{5}{8} )[\/latex]\u00a0<\/span>c.<span style=\"font-size: 14px; white-space: nowrap;\">\u00a0<span style=\"font-size: 0.9em;\">[latex]( \\frac{4}{9} )( \\frac{5}{9} ) + ( \\frac{5}{9} )( \\frac{4}{9} )[\/latex]\u00a0<\/span><\/span><span style=\"font-size: 0.9em;\">d.<\/span><span style=\"font-size: 14px; white-space: nowrap;\">\u00a0<span style=\"font-size: 0.9em;\">[latex]( \\frac{4}{9} )( \\frac{5}{8} ) + ( \\frac{5}{9} )( \\frac{4}{8} )[\/latex]<\/span><\/span><\/p>\n<\/li>\n<li>What is the probability that a tabby is chosen as the second kitten when a black kitten was chosen as the first?<\/li>\n<li>What is the probability of choosing two kittens of the same color?<\/li>\n<\/ol>\n<div class=\"qa-wrapper\" style=\"display: block\"><span class=\"show-answer collapsed\" style=\"cursor: pointer\" data-target=\"q478259\">Show Solution<\/span><\/p>\n<div id=\"q478259\" class=\"hidden-answer\" style=\"display: none\">\n<p>a. c, b. d, c. <span style=\"font-size: 14px; white-space: nowrap;\">[latex]\\frac{4}{8}[\/latex]<\/span>, d. <span style=\"font-size: 14px; white-space: nowrap;\">[latex]\\frac{32}{72}[\/latex]<\/span><\/p>\n<\/div>\n<\/div>\n<\/div>\n<div class=\"textbox key-takeaways\">\n<h3>Try It<\/h3>\n<p>Suppose there are four red balls and three yellow balls in a box. Two balls are drawn from the box without replacement. What is the probability that one ball of each coloring is selected?<\/p>\n<\/div>\n<p><iframe loading=\"lazy\" id=\"oembed-1\" title=\"Count outcomes using tree diagram | Statistics and probability | 7th grade | Khan Academy\" width=\"500\" height=\"281\" src=\"https:\/\/www.youtube.com\/embed\/Zxvc6iPKdec?feature=oembed&#38;rel=0\" frameborder=\"0\" allowfullscreen=\"allowfullscreen\"><\/iframe><\/p>\n<section class=\"ui-body\">\n<div data-type=\"newline\" data-count=\"2\"><\/div>\n<p><!-- pb_fixme --><\/p>\n<\/section>\n\n\t\t\t <section class=\"citations-section\" role=\"contentinfo\">\n\t\t\t <h3>Candela Citations<\/h3>\n\t\t\t\t\t <div>\n\t\t\t\t\t\t <div id=\"citation-list-49\">\n\t\t\t\t\t\t\t <div class=\"licensing\"><div class=\"license-attribution-dropdown-subheading\">CC licensed content, Shared previously<\/div><ul class=\"citation-list\"><li>Statistics, Tree and Venn Diagrams. <strong>Provided by<\/strong>: OpenStax. <strong>Located at<\/strong>: <a target=\"_blank\" href=\"https:\/\/openstax.org\/books\/statistics\/pages\/3-5-tree-and-venn-diagrams\">https:\/\/openstax.org\/books\/statistics\/pages\/3-5-tree-and-venn-diagrams<\/a>. <strong>License<\/strong>: <em><a target=\"_blank\" rel=\"license\" href=\"https:\/\/creativecommons.org\/licenses\/by\/4.0\/\">CC BY: Attribution<\/a><\/em>. <strong>License Terms<\/strong>: Access for free at https:\/\/openstax.org\/books\/statistics\/pages\/1-introduction<\/li><li>Introductory Statistics. <strong>Authored by<\/strong>: Barbara Illowsky, Susan Dean. <strong>Provided by<\/strong>: Open Stax. <strong>Located at<\/strong>: <a target=\"_blank\" href=\"https:\/\/openstax.org\/books\/introductory-statistics\/pages\/1-introduction\">https:\/\/openstax.org\/books\/introductory-statistics\/pages\/1-introduction<\/a>. <strong>License<\/strong>: <em><a target=\"_blank\" rel=\"license\" href=\"https:\/\/creativecommons.org\/licenses\/by\/4.0\/\">CC BY: Attribution<\/a><\/em>. <strong>License Terms<\/strong>: Access for free at https:\/\/openstax.org\/books\/introductory-statistics\/pages\/1-introduction<\/li><li>Count outcomes using tree diagram. <strong>Provided by<\/strong>: Khan Acadamy. <strong>Located at<\/strong>: <a target=\"_blank\" href=\"https:\/\/www.khanacademy.org\/math\/cc-seventh-grade-math\/cc-7th-probability-statistics\/cc-7th-compound-events\/v\/tree-diagram-to-count-outcomes\">https:\/\/www.khanacademy.org\/math\/cc-seventh-grade-math\/cc-7th-probability-statistics\/cc-7th-compound-events\/v\/tree-diagram-to-count-outcomes<\/a>. <strong>License<\/strong>: <em><a target=\"_blank\" rel=\"license\" href=\"https:\/\/creativecommons.org\/licenses\/by-nc-sa\/4.0\/\">CC BY-NC-SA: Attribution-NonCommercial-ShareAlike<\/a><\/em><\/li><li>Prealgebra. <strong>Provided by<\/strong>: Open Stax. <strong>Located at<\/strong>: <a target=\"_blank\" href=\"https:\/\/openstax.org\/books\/prealgebra\/pages\/1-introduction\">https:\/\/openstax.org\/books\/prealgebra\/pages\/1-introduction<\/a>. <strong>License<\/strong>: <em><a target=\"_blank\" rel=\"license\" href=\"https:\/\/creativecommons.org\/licenses\/by\/4.0\/\">CC BY: Attribution<\/a><\/em>. <strong>License Terms<\/strong>: Access for free at https:\/\/openstax.org\/books\/prealgebra\/pages\/1-introduction<\/li><\/ul><\/div>\n\t\t\t\t\t\t <\/div>\n\t\t\t\t\t <\/div>\n\t\t\t <\/section>","protected":false},"author":17533,"menu_order":21,"template":"","meta":{"_candela_citation":"[{\"type\":\"cc\",\"description\":\"Statistics, Tree and Venn Diagrams\",\"author\":\"\",\"organization\":\"OpenStax\",\"url\":\"https:\/\/openstax.org\/books\/statistics\/pages\/3-5-tree-and-venn-diagrams\",\"project\":\"\",\"license\":\"cc-by\",\"license_terms\":\"Access for free at https:\/\/openstax.org\/books\/statistics\/pages\/1-introduction\"},{\"type\":\"cc\",\"description\":\"Introductory Statistics\",\"author\":\"Barbara Illowsky, Susan Dean\",\"organization\":\"Open Stax\",\"url\":\"https:\/\/openstax.org\/books\/introductory-statistics\/pages\/1-introduction\",\"project\":\"\",\"license\":\"cc-by\",\"license_terms\":\"Access for free at https:\/\/openstax.org\/books\/introductory-statistics\/pages\/1-introduction\"},{\"type\":\"cc\",\"description\":\"Count outcomes using tree diagram\",\"author\":\"\",\"organization\":\"Khan Acadamy\",\"url\":\"https:\/\/www.khanacademy.org\/math\/cc-seventh-grade-math\/cc-7th-probability-statistics\/cc-7th-compound-events\/v\/tree-diagram-to-count-outcomes\",\"project\":\"\",\"license\":\"cc-by-nc-sa\",\"license_terms\":\"\"},{\"type\":\"cc\",\"description\":\"Prealgebra\",\"author\":\"\",\"organization\":\"Open Stax\",\"url\":\"https:\/\/openstax.org\/books\/prealgebra\/pages\/1-introduction\",\"project\":\"\",\"license\":\"cc-by\",\"license_terms\":\"Access for free at https:\/\/openstax.org\/books\/prealgebra\/pages\/1-introduction\"}]","CANDELA_OUTCOMES_GUID":"","pb_show_title":"on","pb_short_title":"","pb_subtitle":"","pb_authors":[],"pb_section_license":""},"chapter-type":[],"contributor":[],"license":[],"class_list":["post-49","chapter","type-chapter","status-publish","hentry"],"part":43,"_links":{"self":[{"href":"https:\/\/courses.lumenlearning.com\/introstatscorequisite\/wp-json\/pressbooks\/v2\/chapters\/49","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/courses.lumenlearning.com\/introstatscorequisite\/wp-json\/pressbooks\/v2\/chapters"}],"about":[{"href":"https:\/\/courses.lumenlearning.com\/introstatscorequisite\/wp-json\/wp\/v2\/types\/chapter"}],"author":[{"embeddable":true,"href":"https:\/\/courses.lumenlearning.com\/introstatscorequisite\/wp-json\/wp\/v2\/users\/17533"}],"version-history":[{"count":42,"href":"https:\/\/courses.lumenlearning.com\/introstatscorequisite\/wp-json\/pressbooks\/v2\/chapters\/49\/revisions"}],"predecessor-version":[{"id":3520,"href":"https:\/\/courses.lumenlearning.com\/introstatscorequisite\/wp-json\/pressbooks\/v2\/chapters\/49\/revisions\/3520"}],"part":[{"href":"https:\/\/courses.lumenlearning.com\/introstatscorequisite\/wp-json\/pressbooks\/v2\/parts\/43"}],"metadata":[{"href":"https:\/\/courses.lumenlearning.com\/introstatscorequisite\/wp-json\/pressbooks\/v2\/chapters\/49\/metadata\/"}],"wp:attachment":[{"href":"https:\/\/courses.lumenlearning.com\/introstatscorequisite\/wp-json\/wp\/v2\/media?parent=49"}],"wp:term":[{"taxonomy":"chapter-type","embeddable":true,"href":"https:\/\/courses.lumenlearning.com\/introstatscorequisite\/wp-json\/pressbooks\/v2\/chapter-type?post=49"},{"taxonomy":"contributor","embeddable":true,"href":"https:\/\/courses.lumenlearning.com\/introstatscorequisite\/wp-json\/wp\/v2\/contributor?post=49"},{"taxonomy":"license","embeddable":true,"href":"https:\/\/courses.lumenlearning.com\/introstatscorequisite\/wp-json\/wp\/v2\/license?post=49"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}