Suppose that the random variable X takes the values2, 1,
Chapter 2, Problem 2.4.1(choose chapter or problem)
Suppose that the random variable X takes the values2, 1, 4, and 6 with probability values 1/3, 1/6, 1/3, and 1/6, respectively. (a) Find the expectation of X. (b) Find the variance of X using the formula Var(X) = E((X E(X))2) (c) Find the variance of X using the formula Var(X) = E(X2)(E(X))2
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