G08AJF Example Program Results Mann-Whitney U test Sample size of group 1 = 16 Sample size of group 2 = 23 Data values Group 1 13.0 5.8 11.7 6.5 12.3 6.7 9.2 6.9 10.0 7.3 16.0 7.0 10.5 8.5 9.0 7.5 Group 2 17.0 6.2 10.1 8.0 15.3 8.2 15.0 9.6 14.9 10.4 14.2 9.8 13.8 11.0 14.0 11.1 12.9 11.6 12.8 12.0 13.1 12.4 11.9 Test statistic = 86.0000 Normal statistic = -2.7838 Tail probability = 0.0027 Exact tail probability = 0.0022