Let X be a random varlable with the following probability distribution. Value x of X P (X=x) 10 0.10 20 0.15 30 0.15 40 0.20 50 0.40 Complete the following. (If necessary, consult a list of formulas.) (a) Find the expectation E (X) of X. E (x) - 0 (b) Find the variance Var(X) of X. Var (x) 0 Check acer

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A:

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Q: (a) Find the expectation E (X) of X. E(X)= (b) Find the variance Var(X) of X. Var(x) = 0

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