Multiple choice . Please answer all 3 Question. No explanation required

Let Y be a continuous random variable where Ay) = {1/18 if-3 sys 15 0 otherwise Then expected value # = (choose closest one) A.3 3.6 C. 9 D. 15 OB OC O A ODBased on Question 1, calculate the variance of Y, Var(Y) A. 24 B. 25 C. 26 D. 27 OD OA OB OC[5 point] Number of sales of household appliances, Y, Whirlpool representative Darlene makes in a day is given by following probability distribution. y 0 1 2 3 4 5 P(y) 0.10 0.28 0.18 0.11 0.16 0.17 Expected number of sales she makes is (choose closest one): (A) 0.41 (B) 1.45 (C) 2.46 (D) 3.45 O A OD OC OB