13. What is the variance of the probability distribution? С. О.2575 А. О.5725 В. О. 7255 D. 0.5275 14. The number of qualified voters living in household on a randomly selected subdivision block is described by the following probability distribution. Number of qualified voter/s, x 1 4 Probability, P(X) 0.25 0.50 0.15 0.10 What is the variance of the probability distribution? А. О.99 В. О.89 С.О.80 D. 0.79 15. What is the mean of the probability distribution? С. 2.01 А. 2.10 В. 1.20 D. 1.02

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