Question: A random variable X takes on the value 1, 2, and 4 with probabilities p1, p2, and p4 respectively. Obtain p1, p2, and p4 if

A random variable X takes on the value 1, 2, and 4 with probabilities p1, p2, and p4 respectively. Obtain p1, p2, and p4 if E(X) = 2.0 and Var(X) = 1.5

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