Test H0: μ1 ≤ μ2; H1: μ1 > μ2 at α = .05, when X ¯1 = 75.4, X ¯2 = 72.2, s1 = 3.3, s2 = 2.1, n1 = 6, n2 = 6. Signify which test you are conducting; illustrate hypotheses, test statistic and critical values and mention whether one-tailed or two-tailed. Here mu is Greek letter that is used to signify population mean and Xbar is sample mean.