1.10 Consider tbe Poisson distribution of the preceding problem. N (a) Show that it is properly normalized in the sense that W. 1. (The sum can be extended to infinity to an excellent spproximation, since W. is negligibly small when n2 N.) (b) Use the Poisson distribution to calculate n. (c) Use the Poisson distribution to calculate (An) = (n )i. A saume tbet