Mathematics, 17.07.2019 06:10 Byanka032801

The random variable x represents the number of boys in a family with three children. assuming that births of boys and girls are equally likely, find the mean and standard deviation for the random variable x.
a) mean: 1.50; standard deviation: .87
b) mean: 2.25; standard deviation: .76
c) mean: 2.25; standard deviation: .87
d) mean: 1.50; standard deviation: .76

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