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 95% confidence, assuming that (a) he uses the estimates of 21.4% male and 18.1% female from a previous year? (b) he does not use any prior estimates? (a) n=___ (b) n=___
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 95% confidence, assuming that (a) he uses the estimates of 21.4% male and 18.1% female from a previous year? (b) he does not use any prior estimates? (a) n=___ (b) n=___
Glencoe Algebra 1, Student Edition, 9780079039897, 0079039898, 2018
18th Edition
ISBN:9780079039897
Author:Carter
Publisher:Carter
Chapter4: Equations Of Linear Functions
Section: Chapter Questions
Problem 8SGR
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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 he wishes the estimate to be within three
percentage points with 95% confidence, assuming that (a) he uses the estimates of 21.4% male and 18.1% female from a previous year?
percentage points with 95% confidence, assuming that (a) he uses the estimates of 21.4% male and 18.1% female from a previous year?
(b) he does not use any prior estimates?
(a) n=___
(b) n=___
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