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    kln's Avatar
    kln Posts: 4, Reputation: 1
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    #1

    Dec 4, 2012, 09:51 AM
    Poisson distribution
    Assuming that one in 80 births is a case of twins, calculate the probability of 2 or more births of twins on a day when 30 births occur using Poisson approximation
    tickle's Avatar
    tickle Posts: 23,796, Reputation: 2674
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    #2

    Dec 4, 2012, 03:34 PM
    Sorry, no ticky no laundry. We don't do homework here but will read what you do and tell you if it is right or not.

    En.wikipedia.org/wiki/Poisson_distribution
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