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In a housing society, half of the families have a single child per family, while the remaining half have two children per family. The probability that a child picked at random, has a sibling is _____ |
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Answer» Let E1 = one children family E2 = two children family and A = picking a child then by Baye’s theorem, required probability is P(E2/A) = (1/2x)/(1/2 . x/2 + 1/2 .x) = 2/3 = 0.667 |
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