A study was done on body temperatures of men and women. The results are shown in the table. Assume that the two samples are independent simple random samples selected from normally distributed populations, and do not assume that the population standard deviations are equal. State the conclusion for the test. Use a 0.05 significance level to test the claim that men have a higher mean body temperature than women.

Men Women

u u1 u2

n 11 59

x 97.78F 97.22F

s 0.77F 0.69F

A.Reject the null hypothesis. There is sufficient evidence to support the claim that men have a higher mean body temperature than women.

B.Fail to reject the null hypothesis. There is not sufficient evidence to support the claim that men have a higher mean body temperature than women.

C.Fail to reject the null hypothesis. There is sufficient evidence to support the claim that men have a higher mean body temperature than women.

D.Reject the null hypothesis. There is not sufficient evidence to support the claim that men have a higher mean body temperature than women.