2) Let X1, X2, ...Xn are i.i.d random sample from P(X). (20 points) a) Write down the likelihood of 1. b) Find the MLE of A and show that the MLE is consistent for A as n - co. c) Find the exact expression of upper and lower bound of 100(1 -a)% large samlple C.I of 1. d) Find the MVUE of A and show that the MVUE is consistent for A as n - co