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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 two percentage points with a 90% confidence assuming that (a) he uses the estimates of 21.7% male and 19.8% female from a previous year? (b) he does not use any prior estimates?
(a) he uses the estimates of 21.7% male and 19.8% female from a previous year?
(b) he does not use any prior estimates?
A physiother was to determines the diference in the proportion of men and women who participate in grand physical way. What are the odd te ottaned the when the estimate to be within two percentage points that a) has the estimates of 17 and 100% female from you bh does not prior Round up to the whole ruter)