29. Exercise 27 gives an alternative way of nding beta probabilities when software for the beta distribution is unavailable.

a. Use Exercise 27 together with the F table to obtain a 90% credibility interval for Exercise 28(c).

[Hint: To nd c such that .05 is the probability that F is to the left of

c, reverse the degrees of freedom and take the reciprocal of the value for a .05.]

b. Repeat

(a) using software for the beta distribution and compare with the result of (a).