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Given the following probability distribution, what is the expected value (or mean) of X? x P(X) -100 0.2 25 0.1 50 0.5 100 0.2 -2.5

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Given the following probability distribution, what is the expected value (or mean) of X? x P(X) -100 0.2 25 0.1 50 0.5 100 0.2 -2.5 Question 2 5 Using the probability distribution from Question #1, what is the standard deviation of X

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