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    Question

    If moment generating function of discrete random

    variable X is (q + pet )n , then E(X2) equals to
    A np(np + q) Correct Answer Incorrect Answer
    B nq(p + nq) Correct Answer Incorrect Answer
    C np(p + nq) Correct Answer Incorrect Answer
    D nq(np + q) Correct Answer Incorrect Answer

    Solution

    The correct answer is A

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