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    poisson distribution.

    The number of customers entering the store every 15 minutes follow a Poisson distribution with the parameter λ=2. Calculate the probability that 6 or more customers visit the store within an hour.
    Last edited by mr fantastic; May 30th 2010 at 05:41 AM. Reason: Re-titled.
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    Quote Originally Posted by Suchy View Post
    The number of customers entering the store every 15 minutes follow a Poisson distribution with the parameter λ=2. Calculate the probability that 6 or more customers visit the store within an hour.
    X ~ Poisson (\lambda = (2)(4) = 8).
    Calculate \Pr(X \geq 6) = 1 - \Pr(X \leq 5).
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