Exercise 21 Solution on p 18 The following box plot shows th

Exercise 21 (Solution on p. 18.) The following box plot shows the U.S. population for 1990, the latest available year. (Source:

Bureau of the Census, 1990 Census)

a. Are there fewer or more children (age 17 and under) than senior citizens (age 65 and over)? How do you know?

b. 12.6% are age 65 and over. Approximately what percent of the population are of working age adults (above age 17 to age 65)

Solution

a)

we just need to look the box plot

as you can see the box plox is between 17 and 50 s there are more children than snior citizen because the box plot begin at 17 years and finish at 50

b)

percent of the population are of working age adults (above age 17 to age 65) is 1 - 0.126 = 0.874