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Suppose that X takes on the values -1, 0, and 1 with probabilities 1/8, 6/8, and 1/8, respectively. Then = 0 and = 1/4.

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Suppose that X takes on the values -1, 0, and 1 with probabilities 1/8, 6/8, and 1/8, respectively. Then = 0 and = 1/4. For k = 2, P[2(0.5) < X 0 < 2(0.5)] = P[-1 <

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