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    Question

    For the random variable X with probability density

    function f(x) = (x−3)2 /5; x = 3, 4, 5, the variance of X is:
    A 2/25 Correct Answer Incorrect Answer
    B 4/5 Correct Answer Incorrect Answer
    C 4/25 Correct Answer Incorrect Answer
    D 2/5 Correct Answer Incorrect Answer

    Solution

    The correct answer is C

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