We will perform another test to determine whether record highs are more likely to have occurred recently. If a record high is equally likely to occur in any year of observation, the mean year in which a record is observed would occur at the midpoint of the observation period, which is (1871 + 2013)/2 = 1942. Use the data in Table 9.4 to test the hypothesis that the mean year in which a record high occurred is 1942 against the alternative that it is greater. What do you conclude?