Height and age: Are older men shorter than younger men? According to a national report, the mean height for U.S. men is 69.4 inches. In a sample of 305
men between the ages of 60 and 69, the mean height was x = 69.1 inches. Public health officials want to determine whether the mean height u for older men is
less than the mean height of all adult men. Assume the population standard deviation to be 0 = 2.64. Use the a = 0.10 level of significance and the P-value
method with the TI-84 calculator. State the null and alternate hypothesis.
