Question 3 In 1960, census results indicated that the age at which men in a certain region first married had a mean of 24.5 years. It is widely suspected that young people today are waiting longer to get married. We want to find out if the mean age of first marriage has increased from 24.5 years since then (H > 24.5). The 40 men in our sample first married at an average age of 25.4 years, with a sample standard deviation s of 5.3 years. Assume o is unknown. Use a = 0.01. What is (are) critical value(s)? Question 4 1 pt In 1960, census results indicated that the age at which men in a certain region first married had a mean of 24.5 years. It is widely suspected that young people today are waiting longer to get married. We want to find out if the mean age of first marriage has increased from 24.5 years since then. The 40 men in our sample first married at an average age of 25.4 years, with a sample standard deviation s of 5.3 years. Calculate the test statistic t