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11. Suppose the random variable X has the following probability distribution. 2 6 p(x) 0.1 0.2 0.2 ? Find the missing probability, then calculate the

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11. Suppose the random variable X has the following probability distribution. 2 6 p(x) 0.1 0.2 0.2 ? Find the missing probability, then calculate the mean of the random variable X. What is the mean of the random variable X? (a) 2.2 (b) 4.4 (c) 5.0 (d) 5.5 x (e) 6.2

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