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Question 13 (5 points) The number of adults living in homes on a randomly selected city block is described by the following probability distribution. Number of Adults X 1 2 3 4 P(X = XI) 0.25 0.50 0.10 0.15 What is the expected value of X? ( a) 1.35 ( b) 0.25 O c) 2.15 O d) None of the above Question 14 (5 points) What is the expected value for the number of girls in a family of two children? a) 0.5 ( b) 0.25 O c) 1 O d) None of the above