Question: Suppose we have a random variable X and its expected value E(X) = 0. Which of the following is true? a) Var(X) = E(X) b)

Suppose we have a random variable X and its expected value E(X) = 0. Which of the following is true?

a) Var(X) = E(X)

b) Var(X) < E(X2)

c) Var(X) = E(X2)

d) Var(X) > E(X2)

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