For each of five different years, the accompanying table gives the percentage of high school students who

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For each of five different years, the accompanying table gives the percentage of high school students who had used cocaine at least once in their lives up to that year:

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a. Plot these data on a graph, with the number of years after 1991 on the x axis and the percentage of cocaine users on the y axis.

b. Find the equation of the least-squares line for the data.

c. Use the least-squares line to predict the percentage of high school students who used cocaine at least once by the year 2013.

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Calculus For Business, Economics And The Social And Life Sciences

ISBN: 9780073532387

11th Brief Edition

Authors: Laurence Hoffmann, Gerald Bradley, David Sobecki, Michael Price

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