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AP Statistics
Unit 6 – Proportions
Topic 6.11
A researcher is using a z-score to perform a significance test for the difference in two population proportions. The calculated z-score is -1.8. What can the researcher conclude?
Reject the null hypothesis and conclude that there is a statistically significant difference between the two population proportions
Fail to reject the null hypothesis and conclude that the z-score does not represent an extremely rare value on the sampling distribution
Reject the null hypothesis and conclude that the z-score represents an extremely rare value on the sampling distribution
Fail to reject the null hypothesis and conclude that there is no statistically significant difference between the two population proportions
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AP Statistics - 6.11 Carrying Out a Test for the Difference of Two Population Proportions
Key terms
Population Proportions
Significance Test
Z-Score
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AP® and SAT® are trademarks registered by the College Board, which is not affiliated with, and does not endorse this website.
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