The random variable Y is the number of persons living in a randomly selected occupied housing unit. Its probability distribution is as follows. 1 3 4 5 6 7 ... y P(Y = y) 0.265 0.327 0.161 0.147 0.065 0.022 0.013 a. Find the mean. (Answer in 3 decimal places.) Answer: Blank 1 b. Find the standard deviation. (Answer in 3 decimal places.) Answer: Blank 2

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