i. Suppose we want the MVUE for F

(b) = P(z ~

b) =

1 - e-b/IJ, where F

(b) is the probability that the coprocessor fails before 1000 b hours of use. It can be shown that

( b )n-I (n) t(X) = 1 - 1 - (2::~ .) Ilb,ool LXi ,=1 X, ,=1 is such that Et(X) = 1 - e-b/II . Is t(X) the MVUE for P(z ~ b)? Why or why not? Estimate P(z ~ 20).