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Current Attempt in Progress Determine the mean and variance of the random variable with the following probability mass function. f(x) = (343/57)(1/7)*, x = 1,2,3

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Current Attempt in Progress Determine the mean and variance of the random variable with the following probability mass function. f(x) = (343/57)(1/7)*, x = 1,2,3 Round your answers to three decimal places (e.g. 98.765). Mean = i Variance = e Textbook and Media Save for Later Attempts

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