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Based on a sample of the salaries of professors at a major university, you have performed a multiple regression relating salary to years of service...

Based on a sample of the salaries of professors at a major university, you have performed a multiple regression relating salary to years of service and gender. The estimated multiple linear regression model is

Salary = $45,000 + $3000(Years) + $4000(Gender) + $1000[(Years)(Gender)]

where Gender = 1 if the professor is male and Gender = 0 if the professor is female.
Reference: Ref 11-5

Using the multiple linear regression equation, you would estimate the average difference in the salaries of a male professor with three years of service and female professor with three years of service to be



a. $3000.

b. $5000.

c. $7000.

d. $4000.

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