Number of aces and the number of spades in the hand
A deck of 52 cards is shuffled and a bridge hand of 13 cards is dealt out. Let X and Y denote, respectively, the number of aces and the number of spades in the hand.
(a) Show that X and Y are uncorrelated.
(b) Are they independent?
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You are scheduled to receive annual payments of $5,100 for each of the next 7 years. The discount rate is 10 percent. What is the difference in the present value if you receive these payments at the beginning of each year rather than at the end of
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