Problem 5. X1, ..., X2, ..., Xn are iid Gam(5, 1). (a). Take A = c. Find the constant c to make A an unbiased estimate of 1. (b). Compute the MSE of of the unbiased estimator ) in (a). [hint: use the fact _ Xi ~Gam(no, A) if X1, ..., Xn are iid Gam(a, ))]