Let X be a random variable with the following probability distribution. Value x of X PX=x) 40 0.05 50 0.55 60 0.10 70 0.30 Complete the following. (If necessary, consult a list of formulas.) (a) Find the expectation E (X) of X. E (x) = [] (b) Find the variance Var(X) of X. Var (x) = [] Save Check O 2022 McGraw Hill LLC. All Rights Reserved. Te

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