Does the Speedo Fastskin II Male Hi-Neck Bodyskin competition racing swimsuit improve a swimmer's 200-yard individual medley performance times? A test of 100 randomly chosen male varsity swimmers at several different universities showed that 66 enjoyed improved times,compared with only 54 of 100 female varsity swimmers.In comparing the proportions of males versus females,is it safe to assume normality?

Question

Quizplus · Accepted Answer

Since the sample size is large enough (100 for both male and female), we can assume normality of the proportions of improved times for both genders. Therefore, it is safe to assume normality.

Does the Speedo Fastskin II Male Hi-Neck Bodyskin Competition Racing α\alphaα

Does the Speedo Fastskin II Male Hi-Neck Bodyskin Competition Racing $\alpha$