Determine the critical value, or values, based on the following hypotheses, levels of significance, samples sizes, and test statistics.

Determine the critical value, or values, based on the following hypotheses, levels of significance,samples sizes, and test statistics. (In some cases, more information than necessary to solve the problemis given.)a) H0 :μ = 75, Ha :μ > 75,! = .05, n = 13, t =x " 75s / nb) H0 :μ = 50, Ha :μ < 50,! = .01, n = 24, t =x " 50s / nc) H0 :μ = 20, Ha :μ ! 20," = .025, n = 15, t =x # 20s / nd) H0 :μ1 = μ2 , Ha :μ1! μ2 ," = .05, n1 = 14, n2 = 12, t =x1# x2sp1n1+