The personnel director for Electronics Associates developed the following estimated regression equation relating an employee's score on a job satisfaction test to his or her length of service and wage rate.

Y^=14.4-8.69x1+13.5x2

where

length of service (years)

wage rate (dollars)

job satisfaction test score (higher scoresindicate greater job satisfaction)Round your answers to 2 decimal places.

a.Interpret the coefficients in this estimated regression equation.

If the wage rate does not change, a one year increase in length of service is associated with- Select your answer - a decrease or

an increasein job satisfaction score by___ units. If the length of service does not change, a dollar increase in wage results in- Select your answer - a decrease or an increase in job satisfaction score by___ units.

b.Predict the job satisfaction test score for an employee who has four years of service and makesper hour.