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Math Help - URGENT help Transformations

  1. #1
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    URGENT help Transformations

    Suppose that X1,...,Xn is a random sample from a Weibull distribution, WEI(Q,2)

    Show that 2*(sum of all Xi)^2/Q^2 is chi square distribution with 2n degrees of freedom.

    I have no idea how to look at this problem
    Any ideas?


    Any help is greatly appreciated
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  2. #2
    MHF Contributor matheagle's Avatar
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    first use the moment generating function to obtain the density of the sum
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  3. #3
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    I tried that already but i feel like i can not get it right or i am missing something....How would I find solve this integral-it doesn't seem like it looks like any other distribution?

    Thanks
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  4. #4
    MHF Contributor matheagle's Avatar
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    show your work
    I'm not even sure how you're writing your density
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