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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 (-0.02, 0.10). What can be concluded at the 99% confidence level?
There is no evidence to support a difference in the proportions.
The sample size was too small to make any inference.
The data collection method was flawed, leading to unreliable results.
The proportion of one group is significantly higher than the proportion of the other group.
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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
99% Confidence Level
Difference in 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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