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A discrete random variable X has possible values xi = i2, i = 1, 2, 3, 4 which occur with probabilities 0.4, 0.25, 0.15, 0.1. The mean value = E [X] of X is ___. (Answer up to two decimal places)
    Correct answer is '4.35'. Can you explain this answer?
    Most Upvoted Answer
    A discrete random variable X has possible values xi = i2, i = 1, 2, 3...
    = 1.0 (0.4) + 4 (0.25) + 9 (0.15) + 16 (0.1) = 4.35
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    A discrete random variable X has possible values xi = i2, i = 1, 2, 3...
    = 1.0 (0.4) + 4 (0.25) + 9 (0.15) + 16 (0.1) = 4.35
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    A discrete random variable X has possible values xi = i2, i = 1, 2, 3, 4 which occur with probabilities 0.4, 0.25, 0.15, 0.1. The mean value = E [X] of X is ___. (Answer up to two decimal places)Correct answer is '4.35'. Can you explain this answer?
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