Question: 6.5 A discrete random variable can have the values x 5 3, x 5 8, or x 5 10, and the respective probabilities are 0.2,

6.5 A discrete random variable can have the values x 5 3, x 5 8, or x 5 10, and the respective probabilities are 0.2, 0.7, and 0.1. Determine the mean, variance, and standard deviation of x.

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