8. Use Table 5 to find critical value ( s ) for the following. Assume that the samples are random and independent, the populations are normally distributed, and that population variances are equal. H : u# u, a = 0.10, n = 11, n = 14 (mean sub one does not equal mean sub two. H: u u, a= 0.01, n = 12,n = 15 (mean sub one is greater than mean sub two.)