5. (20 points) There are two biased dice, For the first dice, the number 4 is twice as likely to occur as any other numbers. For the second dice, the odd number is twice as likely to occur as an even number. Assume that X represents the number of times an even number occurs when the first dice flipped 21 times. Assume that Y represents the number of times an even number occurs when the second dice flipped 21 times. a. Compute E[2X+3Y] and