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x = 1 2 3; p(x) = 0.2 0.3 0.5 use the probability function given in the table to calculate the mean of the random
x = 1 2 3; p(x) = 0.2 0.3 0.5 use the probability function given in the table to calculate the mean of the random variable. use use the probability function given in the table to calculate the standard deviation of the random variable
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