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A physical therapist wants to determine the difference in the proportion of men and women who...

A physical therapist wants to determine the difference in the proportion of men and women who participate in regular sustained physical activity. What sample size should be obtained if

hehe

wishes the estimate to be within

fourfour

percentage points with

9999​%

​confidence, assuming that​(a)

hehe

uses the estimates of

22.522.5​%

male and

18.418.4​%

female from a previous​ year?​(b)

hehe

does not use any prior​ estimates?

Math   Statistics-And-Probability   
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