(Optional use of technology.) The accompanying graph shows
Chapter 2, Problem 2.11.13(choose chapter or problem)
(Optional use of technology.) The accompanying graph shows the winning running times in minutes for women in the Boston Marathon a. The graph is roughly linear with negative slope between 1972 and 1982 but seems to flatten out after that. Sketch a piecewise linear function that best approximates the data. b. Set 1972 as year 0 and create a piecewise linear function that describes winning times for women. If using technology, you can create 2 regression lines from 2 subsets of the data, using either the Excel or graph link file MARATHON. c. Interpret the slopes of the 2 linear pieces. d. What would you predict for the winning time in 2010? Since the 2010 Marathon has already occurred, check your prediction on the Internet. e. Write a 60-second summary describing the Boston Marathon winning times for women.
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