Question 611207: Can someone help me with this problem please.
Base on data gathered from the U.S. National Center for Health Statistics, the probability of a baby being born a girl, in a particular decade. was 0.487. what is the probability that a family who had three children that decade had all girls and the probability taht a family with three kids, all born during that decade, had at least one girl.
Answer by stanbon(75887)   (Show Source):
You can put this solution on YOUR website! Base on data gathered from the U.S. National Center for Health Statistics, the probability of a baby being born a girl, in a particular decade. was 0.487. what is the probability that a family who had three children that decade had all girls and the probability taht a family with three kids, all born during that decade, had at least one girl.
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Binomial Problem with n = 3 and p(girl) = 0.487 ; p(boy) = 0.513
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P(1<= x <=3) = 1 - P(x = 0)
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= 1 - 3C0(0.487)^0*(0.513)^3
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= 1 - 0.513^3
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= 0.865
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Cheers,
Stan H.
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