Question: 9. X is a discrete random variable with E[X] = 3.7 and. 1le = 18.1. What is the standard deviation of 3X - 2? A.

9. X is a discrete random variable with E[X] = 3.7 and. 1le = 18.1. What is the standard deviation of 3X - 2? A. 39.69 B. 11.23 C. 4.3 D. 6.3 E. 4.3474

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