A group of 20 people consisting of 10 men and10 women is
Chapter 7, Problem 7.42(choose chapter or problem)
A group of 20 people consisting of 10 men and10 women is randomly arranged into 10 pairs of2 each. Compute the expectation and variance ofthe number of pairs that consist of a man and awoman. Now suppose the 20 people consist of 10married couples. Compute the mean and varianceof the number of married couples that are pairedtogether.
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