Mathematics, 26.09.2019 17:30 tyreque
Determine the mean and variance of the random variable with the following probability mass function. f left-parenthesis x right-parenthesis equals left-parenthesis 343divided by 57right-parenthesis left-parenthesis 1 divided by 7right-parenthesis superscript x baseline comma x equals 1,2,3 round your answers to three decimal places (e. g. 98.765).
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