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

The proportions of families with various numbers of children age 18 or under in a small town are givenin the following table. One familyis randomly selected from this town.

x012345P(x).10.40.30.10.05.05

Find the average number of children age 18 or under per family in this town.

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