State the critical tabled value of t that would be used to

Question

1. State the critical (tabled) value of t that would be used to reject the null hypothesis of equality of population means, for an independent groups t-test under each of the following conditions:

1. H1: μ1 ≠ μ2; n1 = 20, n2 = 20; α = .05
2. H1: μ1 > μ2; n1 = 30, n2 = 30; α = .01
3. H1: μ1 ≠ μ2; n1 = 10, n2 = 10; α = .01
4. H1: μ1 > μ2; n1 = 60, n2 = 60; α = .05
5. H1: μ1 ≠ μ2; n1 = 15, n2 = 10; α = .01