80. Let X1, X2, . . . , Xn be random variables denoting n independent bids for an item that is for sale. Suppose each Xi is uniformly distributed on the interval [100, 200]. If the seller sells to the highest bidder, how much can he expect to earn on the sale? [Hint: Let Y  max(X1, X2, . . . , Xn). Find FY(y) by using the results of Section 5.5 or else by noting that Y y

iff each Xi is y. Then obtain the pdf and E(Y).]