Let pM and pF be the proportions of all college males and females who worked last summer. The hypotheses to be tested are

a. H₀: p_M − p_F = 0 versus H_a: p_M − p_F ≠ 0.

b. H₀: p_M − p_F = 0 versus H_a: p_M − p_F > 0.

c. H₀: p_M − p_F = 0 versus H_a: p_M − p_F < 0.

d. H₀: p_M − p_F > 0 versus H_a: p_M − p_F = 0.

e. H₀: p_M − p_F ≠ 0 versus H_a: p_M − p_F = 0.

A sample survey interviews SRSs of 500 female college students and 550 male college students. Researchers want to determine whether there is a difference in the proportion of male and female college students who worked for pay last summer. In all, 410 of the females and 484 of the males say they worked for pay last summer.

Select the best answer.