The regression equation Salary = 28,000 + 2700 YearsExperience + 1900 YearsCollege describes employee salaries at Ramjac Corporation. The standard error is 2400. Mary has 10 years' experience and 4 years of college. Her salary is $58,350. What is Mary's standardized residual (approximately)?
+1.400
+2.007
-1.771
-1.150