QUESTION 24 A salesman attempts to make 6 sales in 1 day and assume that he has a probability of 0.25 of making each sale. Let S = the number of sales made and assume S ~ Bin(6, 0.25) For each sale the salesman makes, he earns a $200 bonus. Let T be the total bonus ie T = 200S Calculate E(T) correct to Odp. QUESTION 25 Let random variables X and Y be such that X and Y are NOT independent. Which of the following statements MUST be true? O a. Cov(X, Y ) = 0 O b. PxY (x,y) = Px(x) * Py(y) for some values of X and Y. O c. E(X)E(Y ) = E(XY) O d. PxY (x,y) = Px(x) * Py(y) for some values of X and Y