A physical therapist wants to determine the difference in the proportion of men and women who participate in regularsustained physical activity. What sample size should be obtained if she wishes the estimate to be within two percentagepoints with 99% confidence, assuming that(a) she uses the estimates of 22.3% male and 18.5% female from a previous year?(b) she does not use any prior estimates?(a) n =(b) n =(Round up to the nearest whole number.)(Round up to the nearest whole number.)

Given data: Confidence level = 99% Margin of error = 0.02

Answered: A physical therapist wants to determine…

MATLAB: An Introduction with Applications

6th Edition

ISBN:9781119256830

Author:Amos Gilat

Publisher:Amos Gilat

Chapter1: Starting With Matlab

Section: Chapter Questions

Problem 1P

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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 she wishes the estimate to be within three percentage points with 90% confidence, assuming that (a) she uses the estimates of 21.7% male and 18.7% female from (b) she does not use any prior estimates? previous year? (a) n= (Round up to the nearest whole number.) (b) n= (Round up to the nearest whole number.)

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