A discrete random variable takes the values22, 3, 19, and
Chapter 2, Problem 2.9.22(choose chapter or problem)
A discrete random variable takes the values22, 3, 19, and 23 with probabilities 0.3, 0.2, 0.1, and 0.4 respectively. (a) What is the expectation of the random variable? (b) What is the standard deviation of the random variable?
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