Question: Let X be a random variable with the following probability distribution. See attached image. Let X be a random variable with the following probability distribution.

Let X be a random variable with the following probability distribution. See attached image.

Let X be a random variable with the following probability distribution. Value x of X P(X=x) 40 0.10 50 0.05 60 0.20 70 0.20 80 0.05 90 0.40 Complete the following. (If necessary, consult a list of formulas.) (a) Find the expectation E (X) of X. E(X) = 1 X 5 ? (b) Find the variance Var(X) of X. Var (X) = ]

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