A qestion goes like this "A random sample of families is taken, and for each family with three children, the number of girls out of the three children is recorded.". how to understand this is a Binomial distribution? what is the probability mass function? (I can understand it's a Binomial distribution if the number of families with three children is record instead of recording the number of girls.)
2026-04-05 07:15:25.1775373325
proabality mass function of this Binomial distribution
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