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

Multiple Choice

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.
-Which of the following is an appropriate conclusion?

A) The results are statistically significant so the average age appears to be greater than 21.
B) The results are statistically significant so the average age appears to be less than 21.
C) The results are not statistically significant so there is not enough evidence to conclude average age is different from 21.
D) None of the above.