Number of children. The Census Bureau gives this distribution for the number of a familys own children
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Number of children. The Census Bureau gives this distribution for the number of a family’s own children under the age of 18 in American families in 2006:
Number of children: 0 1 2 3 4 Proportion: 0.53 0.20 0.18 0.07 0.02 In this table, 4 actually represents 4 or more. But for purposes of this exercise, assume that it means only families with exactly 4 children under the age of 18. This is also the probability distribution for the number of children under 18 in a randomly chosen family. The expected value of this distribution is the average number of children under 18 in a family. What is this expected value?
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Related Book For
Statistics Concepts And Controversies
ISBN: 9781429277761
7th Edition
Authors: David S Moore, William I Notz
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