Homework 3  Due Feb 7

Problems from our textbook

5.24
5.39 (a)


Suppose Xn converge to X in probability as n go to infinity.
Suppose Yn converge to Y in probability as n go to infinity.
Show that (Xn + Yn) converge to X+Y as n go to infinity.



If X  is distributed as Normal (0, sigma^2) 
compute E(X)^k = ?   for k=1, 2, 3, 4, 5, ....