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AP Statistics: Unit 3: Inference for Categorical Data: Proportions

Original, AI-authored English practice with worked guidance. Selected topics only; independent teacher review is pending. This is not a complete syllabus, official past-paper collection or predicted exam score. SubjectScout is not affiliated with or endorsed by College Board. SAT practice is not a full adaptive test; AP practice does not simulate an entire exam.

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Question 5 · Unit 3: Inference for Categorical Data: Proportions · standard
In a simple random sample of 400 voters from a population of 100,000, 240 support a proposal. Using z* = 1.96 and the one-proportion z interval, what is the approximate 95% confidence interval for the population support proportion?
Question 6 · Unit 3: Inference for Categorical Data: Proportions · challenge
A simple random sample of 100 independent observations from a very large population has 62 successes. To test H0: p = 0.50 against Ha: p > 0.50 using a one-proportion z test, what is the test statistic?

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