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Compute the mean and standard deviation of the random variable using mu Subscript Upper XequalsSummation from nothing to nothing left bracket x times Upper P

Compute the mean and standard deviation of the random variable using mu Subscript Upper XequalsSummation from nothing to nothing left bracket x times Upper P left parenthesis x right parenthesis right bracket and sigma Subscript Upper XequalsStartRoot Summation from nothing to nothing left bracket x squared times Upper P left parenthesis x right parenthesis right bracket minus mu Subscript Upper X Superscript 2 EndRoot

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