Find the critical value (or values) for the t test for each. a. n = 15, = 0.05, right-tailed b. n = 23,

Find the critical value (or values) for the t test for each.

a. n = 15, α = 0.05, right-tailed

b. n = 23, α = 0.005, left-tailed

c. n = 28, α = 0.01, two-tailed

d. n = 17, α = 0.02, two-tailed