Problem 7: (8 minutes) Let A,, A, Aa, be independently and identically distributed - N(2,3) Let B,, B2, By, be independently and identically distributed - N(1,2) Ay, Ay, Ag and B1, B2, By are INDEPENDENT. Let X be the distance between (A,, A,, A;) and (B,, B,, B,). Find E(X2)