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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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