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Let X be a random variable with the following probability distribution.Value x of X P(X=x)...

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Let X be a random variable with the following probability distribution.Value x of X P(X=x) no 10 0.25 20 0.05 30 0.25 40 0.30 50 0.15Complete the following. (If necessary, consult a list of formulas.)(a) Find the expectation E (X) of X. E(X) = 30.5(b) Find the variance Var(x) of X. Var(X) = 195

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