Suppose we have two independent normal random variables, X and Y, where Hx=10, Ox=4, Hy=7 and Oy=3. 1) Determine P(X > 5.5) to the nearest .001 a) 0.870 b) 0.691 c) 0.309 d) 0.130 e) None of the above 2) What is the standard deviation of X-Y? a) 7 b) 5 c) 3 d) 1 e) None of the above