## [answered] Calculate the mean, the variance, and the standard deviatio

 Calculate the mean, the variance, and the standard deviation of the following discrete probability distribution.(Negative values should be indicated by a minus sign. Round your final answers to 2 decimal places.)

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 ? ? ? ? ? x ?40 ? ?18 ? ?13 ? ?4 ? P(X?=?x) 0.52 ? 0.29 ? 0.13 ? 0.06 ?

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 ? ? ??Mean ?? ??Variance ?? ??Standard deviation

0.52

1) mean 2) variance =167.69

3) standard deviation 0.29 0.13 0.06

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