The declining farm population. The number of people living on Americanfarms has declined
Chapter 0, Problem 5.9(choose chapter or problem)
The declining farm population. The number of people living on Americanfarms has declined steadily during the last century. Here are data on the farmpopulation (millions of persons) from 1935 to 1980:Year 1935 1940 1945 1950 1955 1960 1965 1970 1975 1980Population 32.1 30.5 24.4 23.0 19.1 15.6 12.4 9.7 8.9 7.2(a) Make a scatterplot of these data and find the least-squares regression line offarm population on year.(b) According to the regression line, how much did the farm population declineeach year on the average during this period? What percent of the observedvariation in farm population is accounted for by linear change over time?(c) Use the regression equation to predict the number of people living on farmsin 2000. Is this result reasonable? Why?
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