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Let X be a random variable with the following probability distribution. Value of X P (Y-x) 0. 15 0. 20 -1 0.20 O 0.30 0.

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Let X be a random variable with the following probability distribution. Value of X P (Y-x) 0. 15 0. 20 -1 0.20 O 0.30 0. 15 Complete the following. (If necessary, consult a list of formulas.) (a) Find the expectation E (X) of .Y. (b) Find the variance Var(X) of Y

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