AP Statisticshardmcq1 pt
A two-proportion z interval for p1 minus p2 uses the standard error based on
A.each sample's own p-hat
B.the pooled p-hat
C.the true p1 and p2
D.the sample sizes only
Explanation
Core Concept
Intervals use separate estimates.
Correct Answer
Aeach sample's own p-hat
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