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2. Suppose a certain process has the following probability function: f(x) = C for x = -3, -2, -1, 0, 1, 2, 3 1 +

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2. Suppose a certain process has the following probability function: f(x) = C for x = -3, -2, -1, 0, 1, 2, 3 1 + x2 a) Calculate the value of c so that the above function is a valid probability function (leave your answer as a fraction). b) Calculate the expected value of this process. c) What is the standard deviation of this process

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