Consider the mixed effects model yi = a + bixi + oci, with bi = N ( u, T2) .With the same model as in Problem 1, prior distributions are assigned to A = 1/02, now assumed unknown, and p, with a and 1'2 known. The prior for A is gammaf1,1) and the prior for ,u is N(0,102). Using a Gibbs sampler algorithm. (1] The conditional distribution for A is gamma with parameters O (1 +5111 1 +Z1=1 [2% a. bills?)