QUESTION 6 A coffee vending machine adds brewed coffee and then hot water to make a cup of coffee. Let X = the amount of coffee added and Y = amount of water added, assume the following X-N(46,3) (ie E(X) = 46 and Var(X) = 3) Y-N(92,8) Cov(X, Y) = 0.5 What is the expected amount of liquid that ends up in the cup, ie E(X+Y)