Suppose there is sufficient evidence to reject upper h 0 : mu 1 equals mu 2 equals mu 3 using a one-way anova. the mean square error from the anova is determined to be 23.3. the sample means are x overbar 1 equals 3.8, x overbar 2 equals 10.4, and x overbar 3 equals 19.1, with n 1 equals n 2 equals n 3 equals 6. use tukey's test to determine which pairwise means are significantly different using a familywise error rate of alpha equals 0.01.