probability

A nationwide survey showed that 65% of all children in Ghana dislike eating vegetables. If 4 children are chosen at random, what is the probability that all 4 dislike eating vegetables?

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asked by jonas
  1. Consider these events independent because there are a lot more than 4 children in Ghana.
    Use binomial distribution.
    C(4,4)(.65)^4 (.35)^0
    1 * .65^4 * 1
    .65^4

    note C(n,k) = n!/[k!(n-k)!]
    defined as 1 for k = 0

    see
    http://www.mathsisfun.com/data/binomial-distribution.html

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    posted by Damon

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