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please show steps Let Y be a discrete random variable given by the pmf. y p(y) -1 0.4 ? 0.4 5 0.1 Calculate the mean

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Let Y be a discrete random variable given by the pmf. y p(y) -1 0.4 ? 0.4 5 0.1 Calculate the mean of Y. Not enough information is provided. 02 0.5

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