QUESTION 13 One of Umbrella Corporation's manufacturing plants makes two independent products, X and Y. The cost to make X is $ 0.19 per unit and the cost to make Y is $ 0.57 per unit. There is a monthly fixed cost of $ 2169 at the plant. Monthly demand for X and Y is random, but it is known that the expected demand for X, E(X), is 2195 and the expected demand for Y, E(Y), IS 1987 if C is the total monthly cost to make X and Y, find E(C), to two decimal places. Hint use the rules of expected value. QUESTION 14 One of Umbrella Corporation's manufacturing plants makes two independent products, X and Y. The cost to make X is $ 0.55 per unit and the cost to make Y is $ 0.60 per unit. There is a monthly fixed cost of $ 3958 at the plant, Monthly demand for X and Y is random, but it is known that the variance in demand for X, VIX), is 1833 and the variance in demand for Y, VI). is 2646. If C is the total monthly cost to make X and Y, find V(C), to two decimal places. Hint use the rules of variance