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 five percentage points with 90% confidence, assuming that (a) she uses the estimates of 21.8% male and 18.3% female from a previous year? (b) she does not use any prior estimates? (a) n= (Round up to the nearest whole number.) (b) 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 she wishes the estimate to be within five percentage points with 90% confidence, assuming that (a) she uses the estimates of 21.8% male and 18.3% female from a previous year? (b) she does not use any prior estimates? (a) n= (Round up to the nearest whole number.) (b) n = | (Round up to the nearest whole number.)

Glencoe Algebra 1, Student Edition, 9780079039897, 0079039898, 2018

18th Edition

ISBN:9780079039897

Author:Carter

Publisher:Carter

Chapter10: Statistics

Section10.6: Summarizing Categorical Data

Problem 30PPS

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