9.6 Brandon is a cell. During his life cycle, he has Pois()) offspring before he dies. a. Each of his descendants have i.i.d. Pois()) offspring distributions (i.e., like Brandon they independently have Pois()) children before they die). Let X, be the size of the n generation, and let Brandon be the 0" generation (so Xo = 1, since Brandon is just 1 cell, and X1 is the number of children that Brandon has, or the first generation). Find E(X,). b. Discuss for what values of A the generation mean goes to infinity as n grows, and for what values the generation mean goes to 0