government data, a family consists of two or more persons who live together and are related by blood or marriage.  Choose an American family at random and count the number of people it contains.  Here is the assignment of probabilities for your outcome:   Number of persons 2 3 4 5 6 7 Probability 0.42 0.23 0.21 0.09 0.03 0.02   Using the probabilities above, what is the expected size of the family you draw?

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