Question: Having problems with this, Can anyone assist? Let X be a random variable with the following probability distribution: Value x of X P (X=x) -10

Having problems with this, Can anyone assist?

Let X be a random variable with the following probability distribution: Value x of X P (X=x) -10 0.15 0 0.10 10 0.20 20 0.15 30 0.05 40 0.35 Find the expectation E (X ) and variance Var (X) of X. (If necessary, consult a list of formulas.) E (x) = 1 X 5 ? Var (x) = 1

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