Main content
Course: AP??/College Statistics?>?Unit 10
Lesson 9: Testing for the difference of two population proportions- Hypothesis test for difference in proportions
- Constructing hypotheses for two proportions
- Writing hypotheses for testing the difference of proportions
- Hypothesis test for difference in proportions example
- Test statistic in a two-sample z test for the difference of proportions
- P-value in a two-sample z test for the difference of proportions
- Comparing P value to significance level for test involving difference of proportions
- Confidence interval for hypothesis test for difference in proportions
- Making conclusions about the difference of proportions
? 2024 Khan AcademyTerms of usePrivacy PolicyCookie Notice
Test statistic in a two-sample z test for the difference of proportions
You might need: Calculator
Problem
Market researchers wondered if teens were more or less likely than adults to use their mobile phone as an alarm clock. The researchers surveyed a random sample of people and removed those who didn't have a mobile phone. Here are the results:
Use phone as alarm? | Teens | Adults |
---|---|---|
Yes | ||
No | ||
Total |
The researchers want to test if these results suggest a significant difference between the proportions of teens and adults that use their phone as an alarm clock. Assume that all conditions have been met.
Which of the following would be an appropriate test statistic for their test?