1500 Families with 2childern were selected randomly, and the following data were recorded : Number of girls in a family: 2, 1, 0 Number of families: 475,814,211 . compute the probability of a family chosen at random , having 1.2girl 2. 1girl 3. No girl.
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1 . 2girls
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2girls is compute the probability of a family chosen at random,
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