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The proportions of families with various numbers of children age 18 or under in a small town are given in the following table. One family

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The proportions of families with various numbers of children age 18 or under in a small town are given in the following table. One family is randomly selected from this town. X 0 1 2 3 4 5 P(x) .10 .40 .13 .10 .22 .05 Find the average number of children age 18 or under per family in this town

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