One study, based on responses from 1011 students, concluded that 39% of teenagers cite grades as greatest source of pressure. Use a 0.05 significance level to test the claim that fewer than half of all students in the population feel that grades are their greatest source of pressure.

(a) What is the null and alternative hypothesis?

(b) z=

(c) P-value=

(d) Choose correct answer:

(a) Reject. There is insufficient evidence to support.

(b) Do not reject. There is insufficient evidence to support.

(c) Do not reject. There is sufficient evidence to support.

(d) Reject. There is sufficient evidence to support.