Introduction: Hypothesis Test for Difference in Two Population Proportions

What you’ll learn to do: Construct and interpret an appropriate hypothesis test to compare two population/treatment group proportions.


  • Under appropriate conditions, conduct a hypothesis test for comparing two population proportions or two treatments. State a conclusion in context.
  • Interpret the P-value as a conditional probability.
  • Identify type I and type II errors and select an appropriate significance level based on an analysis of the consequences of each type of error.