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 he wishes the estimate to be within three percentage points with 99% confidence, assuming that (a) he uses the estimates of 22.2% male and 19.1% female from a previous year? (b) he does not use any prior estimates? (a) n = (Round up to the nearest whole number.)

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 he wishes the estimate to be within three percentage points with 99% confidence, assuming that (a) he uses the estimates of 22.2% male and 19.1% female from a previous year? (b) he does not use any prior estimates? (a) n = (Round up to the nearest whole number.)

A First Course in Probability (10th Edition)

10th Edition

ISBN:9780134753119

Author:Sheldon Ross

Publisher:Sheldon Ross

Chapter1: Combinatorial Analysis

Section: Chapter Questions

Problem 1.1P: a. How many different 7-place license plates are possible if the first 2 places are for letters and...

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