The following table provides a probability distribution for the random variable x. x f(x) 3 .25 6 .50 9 .25 Q-1Compute E(x), the expected value of x. Q-2Refer to the data and probabilities in question 5. Compute σ2, the variance of x. Q-3Refer to the data and probabilities in question 5. Compute σ, the standard deviation

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