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Math Help - Poisson Probability Distribution

  1. #1
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    Poisson Probability Distribution

    Increased research have focused on the number of illnesses involving the E.Coli,. Sporadic outbreaks of E.coli have occurred in Colorado at a rate of approx. 2.4 per 100,000 for a period of two years.

    If this rate hasn't changed and if 100,000 cases were reviewed for the year, what is the probability that at least 5 cases of E.coli will be observed?

    Thanks for any help. Im not sure how to do this...
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  2. #2
    Senior Member Sambit's Avatar
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    Find P[X>5] where x follows a Poisson(2.4) distribution.
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  3. #3
    MHF Contributor harish21's Avatar
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    Quote Originally Posted by Sambit View Post
    Find P[X>5] where x follows a Poisson(2.4) distribution.
    At least 5 cases means 5 or more cases. So one is supposed to find P(X \geq 5) here.

    Quote Originally Posted by jzellt View Post
    what is the probability that at least 5 cases of E.coli will be observed?
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