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in a recent poll of city voters it was found that 90% liked the view of the city skyline.find the probability that exactly 2 voters in a sample of 5 voters will like the viewof the city skyline.

  • math -

    prob of liking = .9
    prob of not liking = .1

    prob that 2 of 5 will like = C(5,2)(.9)^2 (.1)^3)
    = 10(.81)(.001) = .0081

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