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AP Statistics
Unit 6 – Proportions
Topic 6.11
What does it mean if the z-score in a test for the difference in two population proportions is higher than 2 or 3?
The observed difference is statistically significant and unlikely to have occurred by chance
The null hypothesis can be rejected with a high degree of confidence
All of the choices are correct
The z-score represents an extremely rare value on the sampling distribution
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AP Statistics - 6.11 Carrying Out a Test for the Difference of Two Population Proportions
Key terms
Population Proportions
Z-Score
Difference in Two Population Proportions
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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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