Let t, represent a particular value of t from Table VI of Appendix B. Find the table values such that the follow11 ing statements arc true.

a. P(t 5 t,) = .05 where df = 20

b. P(t 2 to) = .005 where df = 9

c. P(t 5 -t, or t 2 t,) = .10 where df = 8

d. P(t 5 -to or t r to) = .O1 where df = 17