Find the critical values for t that correspond to the following:

a. n = 12,
= 0.05 one-tailed (right)

b. n = 12,
= 0.01 one-tailed (right)

c. n = 19,
= 0.05 one-tailed (left)

d. n = 19,
= 0.05 two-tailed

e. n = 28,
= 0.05 one-tailed (left)

f. n = 41,
= 0.05 two-tailed g. n = 8,
= 0.10 two-tailed h. n = 201,
= 0.001 two-tailed