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AP Statistics
Unit 6 – Proportions
Topic 6.9
A researcher constructs a confidence interval for the difference in proportions and finds (0.12, 0.28). What is the correct interpretation of this interval at the 95% confidence level?
The sample size was too small to draw any conclusions.
We are 95% confident that the true difference in the sample proportions falls between 0.12 and 0.28.
We are 95% confident that the true difference in the population proportions falls between 0.12 and 0.28.
There is no evidence to suggest a difference in the population proportions.
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AP Statistics - 6.9 Justifying a Claim Based on a Confidence Interval for a Difference of Population Proportions
Key terms
Confidence Interval
95% Confidence Level
Difference in Proportions
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© 2024 Fiveable Inc. All rights reserved.
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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