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  1. #1
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    Poisson




    I just took an exam and not sure if I botched up on the Poisson concept which was asked several times.


    Possion (e^-lambda*lambda^X/X!)


    .5 people walk in a store every 1 minutes. What is probability that exactly 3 people walk in store in 10 minutes. Would I just multiply .5 by 10 =5.


    Is this the correct answer?
    lambda = 5
    X=3

    P(X=3) = 14.0373896%

    Thanks

  2. #2
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    looks right to me

    jerry

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