1) In a manufacturing process in which glass items are being produced , defects in a form of bubbles occur , and if there are many of them , the item is undesirable for marketing . The X number of bubbles is thought to follow a Poisson (A) distribution (P (X = x) = f(x, A) = 7, I = 0, 1, 2, .. .). Let a sample X = (X1, X2, ..., X,) of such Poisson random variables be given. a) Suggest a simple unbiased estimator W of the parameter T(A) = (A + 1)e-* = P(X,