# statistics

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An expert witness in a case of alleged racial discrimination in a state university school of nursing
introduced a regression of the determinants of Salary of each professor for each year during an
8-year period (n = 423) with the following results, with dependent variable Year (year in which
the salary was observed) and predictors YearHire (year when the individual was hired), Race (1 if
individual is black, 0 otherwise), and Rank (1 if individual is an assistant professor, 0 otherwise).
Interpret these results.
Unsolved 2012-03-19 14:36:54 In the following regression, X = total assets (\$ billions), Y = total revenue (\$ billions), and n = 64
large banks. (a) Write the fitted regression equation. (b) State the degrees of freedom for a two tailed
test for zero slope, and use Appendix D to find the critical value at รก = .05. (c) What is your
conclusion about the slope? (d) Interpret the 95 percent confidence limits for the slope. (e) Verify
that F = t2 for the slope. (f) In your own words, describe the fit of this regression