A community consists of 100 married couples. If 50 members
Chapter , Problem 37(choose chapter or problem)
A community consists of 100 married couples. If 50 members of the community die, what is the expected number of marriages that remain intact? Assume that the set of people who die is equally likely to be any of the ' 200 50 ( groups of size 50. Hint: For i = 1, . . . , 100 let Xi = _ 1 if neither member of couple i dies 0 otherwise
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