(Solution) - Recall that a Mach rating score was determined for each -(2025 Original AI-Free Solution)

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Recall that a Mach rating score was determined for each in a sample of accounting alumni of a large southwestern university. For one portion of the study, the researcher modeled an accountant's Mach score (y) as a function of age, gender, education, and income. Data on n = 198 accountants yielded the results shown in the table.

a. Conduct a test of overall model utility. Use ? = .05.
b. Interpret the coefficient of determination. R2.
c. Is there sufficient evidence (at ? = .05) to say that income is a statistically useful predictor of Mach score?
For Information: Refer to the Behavioral Research in Accounting (Jan. 2008) study of Machiavellian traits (e.g., manipulation, cunning, duplicity, deception, and bad faith) in accountants. Exercise 9.8.