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Determine the mean and variance of the random variable with the following probability mass function. f...

Determine the mean and variance of the random variable with the following probability mass function. f left-parenthesis x right-parenthesis equals left-parenthesis 512divided by 73right-parenthesis left-parenthesis 1 divided by 8right-parenthesis Superscript x Baseline comma x equals 1,2,3 Round your answers to three decimal places (e.g. 98.765). Mean = Entry field with incorrect answer now contains modified data Variance = Entry field with incorrect answer now contains modified data

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