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

a. n = 12, α = 0.01, left-tailed

b. n = 16, α = 0.05, right-tailed

c. n = 7, α = 0.10, two-tailed

d. n = 11, α = 0.025, right-tailed

e. n = 10, α = 0.05, two-tailed