Let X be a random variable with the following probability distribution. Value x of X P(X=x) 20 0.15 30 0.20 40 0.05 50 0
Posted: Sun Sep 05, 2021 5:22 pm
Let X be a random variable with the following probability distribution. Value x of X P(X=x) 20 0.15 30 0.20 40 0.05 50 0.05 60 0.10 70 0.45 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