10B

A yellow umbrella under a sunny sky. Several tables and graphs. The first table is labeled “Descriptive Statistics” and has three columns. The first column is labeled “Sample Size” and reads 38,442. The second column is labeled “Successes” and reads 2,693. The last column is labeled “Sample Proportion” and reads 0.0701. The next table is titled “Estimate of Population Proportion” and has three columns. The first column is labeled “Point Estimate” and reads 0.0701. The second column is labeled “Standard Error” and reads 0.0013. The last column is labeled “Margin of Error” and reads plus or minus 0.026. The third table is labeled “Confidence Interval” and has four columns. The first column is labeled “Population Parameter” and reads “Proportion p.” The second column is labeled “Lower Bound” and reads 0.0676. The third column is labeled “Upper Bound” and reads 0.0726. The last column is labeled “Confidence Level” and reads 95%. To the right of the tables is a bar chart, labeled “Proportion” on the y-axis with “Success” and “Failure” as categories on the x-axis. Success has a proportion of approximately 0.07 and failure has a proportion of approximately 0.93. Beneath the tables and graph is a number line that reads “95% Confidence Interval” above it and “Population Proportion P” beneath it. It is labeled in increments of 0.005 from 0.045 to 0.095. There is a point labeled p at approximately 0.07 with bounds labeled “[0.0675, 0.07261].” A confidence interval shown on a table and a number line. For the table, the first column is labeled “Population Parameter” and it reads “Proportion p.” The second column is labeled “Lower Bound” and it reads 0.6947. The third column is labeled “Upper Bound” and it reads 0.7450. The last column is labeled “Confidence Level” and reads 99%. Beneath the table is the number line, labeled “99% Confidence Interval” above and “Population Proportion p” below. There is a point at approximately 0.72 with bounds labeled “[0.6947, 0.745].” Several tables and graphs. The first table is labeled “Descriptive Statistics” and has three columns. The first column is labeled “Sample Size” and reads 38,440. The second column is labeled “Successes” and reads 13,888. The last column is labeled “Sample Proportion” and reads 0.3613. The next table is titled “Estimate of Population Proportion” and has three columns. The first column is labeled “Point Estimate” and reads 0.3613. The second column is labeled “Standard Error” and reads 0.0025. The last column is labeled “Margin of Error” and reads plus or minus 0.0048. The third table is labeled “Confidence Interval” and has four columns. The first column is labeled “Population Parameter” and reads “Proportion p.” The second column is labeled “Lower Bound” and reads 0.3565. The third column is labeled “Upper Bound” and reads 0.3661. The last column is labeled “Confidence Level” and reads 95%. To the right of the tables is a bar chart, labeled “Proportion” on the y-axis with “Success” and “Failure” as categories on the x-axis. Success has a proportion of approximately 0.36 and failure has a proportion of approximately 0.74. Beneath the tables and graph is a number line that reads “95% Confidence Interval” above it and “Population Proportion P” beneath it. It is labeled in increments of 0.5 from 0.25 to 0.45. There is a point labeled p at approximately 0.36 with bounds labeled “[0.3565, 0.3661].”A graph labeled “Population Proportion p” on the x-axis with a vertical line at 0.4. There are ten dots, each in the center of a short horizontal line. 9 of the dots are green and intersect the vertical line. 1 of the dots is red and does not intersect with the vertical line. A graph labeled “Population Proportion p” on the x-axis with a vertical line at 0.4. There are many dots, each in the center of a short horizontal line. The majority of the dots are green and intersect the vertical line. 7 of the dots are red and do not intersect with the vertical line. A confidence interval shown on a table and a number line. For the table, the first column is labeled “Population Parameter” and it reads “Proportion p.” The second column is labeled “Lower Bound” and it reads 0.4332. The third column is labeled “Upper Bound” and it reads 0.5029. The last column is labeled “Confidence Level” and reads 99%. Beneath the table is the number line, labeled “99% Confidence Interval” above and “Population Proportion p” below. There is a point at approximately 0.47 with bounds labeled “[0.4332, 0.5029].”

Point-Estimate
Standard Error
Margin of Error
Confidence Level
Lower Bound
Upper Bound
Point-Estimate
Standard Error
Margin of Error
Confidence Level
Lower Bound
Upper Bound
Point Estimate,
Lower Bound
Upper Bound
Lower bound Upper bound
Skill or Concept: I can . . . Questions to check your understanding Rating
from 1 to 5
Identify the components of a confidence interval from a summary generated using technology. 1–4
Interpret a confidence interval for a population proportion. 5, 6
Construct a confidence interval using technology. 7