Determine the mean and variance of the random variable with the following probability mass function. f(x) = (64/21)(1/4)*, x = 1,2,3 Round your answers to three decimal places (e.g. 98.765). Mean = 1.286 Variance = i 1.157

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Determine the mean and variance of the random variable with the following probability mass function.
f(x) = (64/21)(1/4)*, x = 1,2,3
Round your answers to three decimal places (e.g. 98.765).
Mean = 1.286
Variance = i 1.157
Transcribed Image Text:Determine the mean and variance of the random variable with the following probability mass function. f(x) = (64/21)(1/4)*, x = 1,2,3 Round your answers to three decimal places (e.g. 98.765). Mean = 1.286 Variance = i 1.157
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