# 10.13: Introduction- Distribution of Differences in Sample Proportions

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## What you’ll learn to do: Recognize when to use a two population proportion hypothesis test to compare two populations/treatment groups.

### LEARNING OBJECTIVES

• Recognize when to use a hypothesis test or a confidence interval to compare two population proportions or to investigate a treatment effect for a categorical variable.
• Determine if a study involving two proportions is an experiment or an observational study.
• Describe the sampling distribution of the difference between two proportions.
• Draw conclusions about a difference in population proportions from a simulation.