Exam 8

8. Stargell Research Associates conducted a study of the radio listening habits of men and women. One facet of the study involved the listening time. In random sample of 12 women, the mean listening time was 34.1 minutes per day with a standard deviation of 12.3 minutes per day. In an independent sample of 9 men, the mean listening time was 35.6 minutes per day with a standard deviation of 10.3 minutes per day. Assume the distributions of listening times for both men and women are normal. At 5% significance level, is there enough evidence to believe that there is more variation in the listening time for women than for men