The percentages of U.S. teenagers with driver€™s licenses are shown in Table 54 for various ages.

Let p = f (a) be the percentage of teenagers at age a years who have driver€™s licenses.
a. Use technology to construct a scatterplot.
b. Describe the four characteristics of the association. Compute and interpret r as part of your analysis.
c. Graph the model f (a) = 6.81a - 52.32 on the scatterplot. Does it come close to the data points?
d. Find f (20). What does it mean in this situation? Find the error in your result.
e. Find f (15). What does it mean in this situation? Did you perform interpolation or extrapolation? Do you have much faith in this prediction? Explain.

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Table 54 Percentages of U.S. Teens with Driver's Licenses Age years) 16 17 18 19 20 Percent 56.8 613 72.0 79.4 81.8