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12_ Suppose the random variable X has the following probability distribution. P(X =x) 0.2 0.1 0.7 W…
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12_ Suppose the random variable X has the following probability distribution. P(X =x) 0.2 0.1 0.7 Which of the following is true? (A) P(X gt; 2) = 0.8 B) E(X) = 2.0 (C) SD(X) = 1.61 (D) Var(X) = 6.76
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