Question: Let X denote a random variable that takes on any of the values -1,0, and 1 with respective probabilities Exercise Let X denote a random

Let X denote a random variable that takes on any of the values -1,0, and 1 with respective probabilities

Exercise Let X denote a random variable that takes on any of the values -1, 0, and 1 with respective probabilities P{X = -1} =0.2, P{X = 0} = 0.5, P{X = 1} = 0.3. Find the expectation E(X) and the variance Var(X) of X respectively

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