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The following function is probability mass function. f(x ) = 3r+5 55 x = 0, 1, 2, 3, 4 Determine the mean, , and variance,

The following function is probability mass function. f(x ) = 3r+5 55 x = 0, 1, 2, 3, 4 Determine the mean, , and variance, o', of the random variable. Round your answers to two decimal places (e.g. 98.76). U = 02 i

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