QUESTION 6 If X and Y are random variables with E()() =5 and E(1) = 3, then E(2X - 37) is: O a. 1 O b. 15 O c. 21 O d. 42 O e. None of the above QUESTION 7 Consider two independent events A and B. The probability that event A occurs is 0.40 and the probability that event A occurs when event B occurs is 0.40, then P(B) is: O a. 1.0 O b. 0.6 O c. 0.4 O d. 0.2 O e. P(B) cannot be determined with the information given