High salaries for presidents and high executives of charitable organizations have been in the news from time to time. Consider the information in Table 11.3.13 for the United Way in 10 major cities.
a. What percent of the variation in presidents€™ salaries is explained by the fact that some raised more money per capita than others? Please give both the number and the usual statistical name for this concept.
b. Find the regression equation to predict salary from money raised per capita.
c. Find the residual value for Seattle, predicting salary from money raised per capita.
d. Find the usual summary measure of the typical error made when using the regression equation to predict salaries from money raised per capita.
e. Is there a significant relationship between president€™s salary and per capita money raised? How do you know?

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TABLE 11.3.13 Charitable Organizations Salary of Money Raised (per capita) Salary of Money Raised (per capita) City Atlanta Chicago Cleveland Denver Detroit President $161,396 189,808 171,798 108,364 201,490 $17.35 15.81 31.49 15.51 16.74 City Houston Kansas City Los Angeles Minneapolis Seattle President $146,641 126,002 155,192 169,999 143,025 $15.89 23.87 9.32 29.84 24.19