Let X1...Xn be a random sample from a Poisson distribution with mean . Let has a Poisson distribution with mean . is approximately for large n. Show that u(Y/n) = is a function of Y/n whose variance is free of
(c1 = cn)
(c2 = 2c1)
If c2 = 1, then
Is this correct, or have I made a mistake somewhere?