A community consists of 100 married couples. If during a given year 50 of the members...

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A community consists of 100 married couples. If during a given year 50 of the 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) groups of size 50. (Hint: For i = 1, ..., 100 let 50 1 =-6 X₁ = if neither member of couple i dies 0 otherwise A community consists of 100 married couples. If during a given year 50 of the 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) groups of size 50. (Hint: For i = 1, ..., 100 let 50 1 =-6 X₁ = if neither member of couple i dies 0 otherwise

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There are 200C50 ways to choose 50 people to go For any given marriage there are 198C50 ways for the ... View the full answer