To determine if there is genderand/or race discrimination in carbuying, a researcher put together a team of whitemales, blackmales, whitefemales, and black females who were each asked to obtain an initial offer price from the dealer on a certain model car. The accompanying data are based on the results and represent the profit on the initial price offered by the dealer. Previous testing resulted in rejecting H0: WM=BM=WF=BF and concluding that the mean profit for the fourrace-gender groups differ. UseTukey's test to determine which pairwise means differ using a familywise error rate of =0.05.

Row White Males Black Males White Females Black Females 1300 1247 946 1895 640 1821 952 2056 951 1612 758 1941 793 1545 702 2174 664 590 2315 6 00 J O UI A W N 828 1990 1040 1786 858 733 10 558 11 432 12 1179 13 850 14 872 15 758