The U.S.Census Bureau (Annual Social & Economic Supplement)collects demographics concerning the number of people in families per household.Assume the distribution of the number of people per household is shown in the following table: Calculate the expected number of people in families per household in the United States.
A)2.71
B)3.33
C)3.51
D)4.33

Question

The U.S.Census Bureau (Annual Social & Economic Supplement)collects demographics concerning the number of people in families per household.Assume the distribution of the number of people per household is shown in the following table:  Calculate the expected number of people in families per household in the United States.
A)2.71 
B)3.33 
C)3.51 
D)4.33

Quizplus · Accepted Answer

To find the expected number of people in families per household, we need to take the weighted average of the number of people in each category.

We do this by multiplying each category by its respective probability, then adding up these products for all categories.

Expected value = (1 x 0.17) + (2 x 0.34) + (3 x 0.26) + (4 x 0.12) + (5 x 0.06) + (6 x 0.04) = 3.51

Therefore, the expected number of people in families per household in the United States is 3.51.

The USCensus Bureau (Annual Social & Economic Supplement)collects Demographics Concerning the the Number