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2. (8 points) A random variable x can assume five values: 3, 6, 9, 12, 15. A portion of the probability distribution is shown here:

2. (8 points) A random variable x can assume five values: 3, 6, 9, 12, 15. A portion of the probability distribution is shown here: T 3 6 9 12 15 p(x) .2 .1 .4 ? .1 P(6

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