Question: The CDC reported very large weight increases for U.S. residents of both genders and of all age groups over the last four decades. Go to

The CDC reported very large weight increases for U.S.

residents of both genders and of all age groups over the last four decades. Go to the Web site that reports these data (www.cdc.gov) and search for the article titled

“Americans Slightly Taller, Much Heavier Than 40 Years Ago.”

a. What were the average weights of 10-year-old girls in 1963 and in 2002?

b. Do you think the CDC weighed every girl in the United States to get these averages? Why would this not be feasible?

c. How does the average weight of 10-year-old girls in 2002 represent both a descriptive and an inferential statistic?

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