A counselor wants to show that for men who are married by the time they are 30, ? = 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 gets married for the first time is normally distributed. What is the value of the test statistic?
A) t =1.80
B) t =2.00
C) t =2.33