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Math Help - poisson distribution?

  1. #1
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    Question poisson distribution?

    The probability of no major storm is 0.3 during each of the four months of the hurricane season. how do you find the probability that at least one major storm occurs for the fi…rst time in the third month of the season? the Poisson distribution?
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  2. #2
    Senior Member Danneedshelp's Avatar
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    Quote Originally Posted by Intsecxtanx View Post
    The probability of no major storm is 0.3 during each of the four months of the hurricane season. how do you find the probability that at least one major storm occurs for the fi…rst time in the third month of the season? the Poisson distribution?
    ....

    My bad, I assumed a poisson distribution, since it was in the title.
    Last edited by Danneedshelp; October 7th 2009 at 11:40 PM.
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  3. #3
    MHF Contributor matheagle's Avatar
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    looks like a geometric to me
    P(no storm month one, no storm month two, storm in month three)

    =P(no storm month one)P(no storm month two)P(storm in month three)

    =(.7)(.7)(.3)
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  4. #4
    MHF Contributor matheagle's Avatar
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    u do no what happens when you assume
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