題組內容

3. (15%, 5% each) We would like to test the hypothesis that the proportions between genders in favor of tax cut are the same (Men and women are treated as two populations). A random sample of 100 men revealed that 64 were in favor of tax cut and a random sample of 100 women revealed that 80 were in favor.



(a) What is the point estimate of the difference between two population proportions in favor of tax cut?