1. In 1960, census results indicated that the age at which American men first married had a mean of 23.3 years and standard deviation 5.3 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 during the past 50 years.
   1. Write appropriate null and alternative hypotheses.

H₀:__________ vs. H_a:__________

1. 1. A random sample of 40 men married at an average age of 24.2 years. What is the P-value for this result? ____________________