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QUESTION
A family has 4 natural children and has adopted 2 girls. Each natural child has equal probability of being a girl or a boy, independent of the other...
- A family has 4 natural children and has adopted 2 girls. Each natural child has equal probability of being a girl or a boy, independent of the other children. Let X be the number of girls out of the 6 children. Find the mean and variance of X
