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Math Help - probability of cancellations

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    probability of cancellations

    A barbershop requires appointments for perms and hair cuts. Ten percent of those makeing appointments cancel or simply fail to show up. Next week's appointment calendar has 64 appointments. Let x be the number of missed appointments out of the 64. The probability that more than 3 cancellations and/or no shows will occur during the next week is?
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    Quote Originally Posted by jax760 View Post
    A barbershop requires appointments for perms and hair cuts. Ten percent of those makeing appointments cancel or simply fail to show up. Next week's appointment calendar has 64 appointments. Let x be the number of missed appointments out of the 64. The probability that more than 3 cancellations and/or no shows will occur during the next week is?
    Use binomial with n = 64 and p = 0.1 to calculate Pr(X > 3) = 1 - Pr(X = 0) - Pr(X = 1) - Pr(X = 2).
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