Compute the standard error of the estimate for Exercise 15 in Section 10€“1. The regression line equation was found in Exercise 15 in Section 10€“2.
The director of an alumni association for a small college wants to determine whether there is any type of relationship between the amount of an alumnus€™s contribution (in dollars) and the years the alumnus has been out of school. The data follow.
Years and contribution data are as follows:

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1 53 10 7 6 Years r Contribution y, S 500 100 300 50 75 80