45. Determine the following:

a. The 95th percentile of the chi-squared distribution with n  10

b. The 5th percentile of the chi-squared distribution with n  10

c. P(10.98 x2 36.78), where x2 is a chisquared rv with n  22

d. P(x2  14.611 or x2 37.652), where x2 is a chi-squared rv with n  25