Use the Following Information for Questions:
a Counselor Wants $\mu$

Use the following information for questions:
A counselor wants to show that for men who are married by the time they are 30, $\mu$ = average age when the men are married is not 21 years old. A random sample of 10 men who were married by age 30 showed an average age at marriage of 22.2, with a sample standard deviation of 1.9 years. Assume that the age at which this population of men get married for the first time is normally distributed.
-What are the appropriate null and alternative hypotheses?

A) H₀: $\mu$ = 21 and H_a: $\mu$ < 21
B) H₀: $\mu$ = 21 and H_a: $\mu$ >21.
C) H₀: $\mu$ = 21 and H_a: $\mu$$\neq$ 21.
D) H₀: $\mu$ $\neq$ 21 and H_a: $\mu$ = 21.