Suppose that we are to observe two independent random samples: Y1, Y2,..., Yn denoting a
Chapter 5, Problem 5.161(choose chapter or problem)
Suppose that we are to observe two independent random samples: Y1, Y2,..., Yn denoting a random sample from a normal distribution with mean 1 and variance 2 1 ; and X1, X2,..., Xm denoting a random sample from another normal distribution with mean 2 and variance 2 2 . An approximation for 1 2 is given by Y X, the difference between the sample means. Find E(Y X) and V(Y X).
Unfortunately, we don't have that question answered yet. But you can get it answered in just 5 hours by Logging in or Becoming a subscriber.
Becoming a subscriber
Or look for another answer