A medical school was conducting a series of preliminary research studies regarding how fast individuals at various ages could run the quarter mile. Following is the data from one study with ages from 32 to 88 and their corresponding times in seconds.
(a) Plot the data on linear graph paper.
(b) Using the method of least squares, determine the equation of the line of best fit.
(c) Construct the line of best fit on the graph paper.
(d) Calculate and interpret the coefficient of correlation.
(e) What approximate speed in seconds would you expect from a 25 and 95 year old?
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