A multiple regression analysis to assess the effects of age and wage ($/hr) on productivity units produced the following output: Coefficient Standard Error t-stat p-value Intercept 23.004 4.765 4.828 0.0002 Age 1.769 0.548 3.228 0.0042 Wage -1.087 0.427 -2.545 0.0192 a) Estimate the productivity units for a 48-year-old earning $25/hr. Round to the nearest whole number. b) Which of the following best interprets the regression coefficient for Wage? O For each additional productivity unit, wage on average decreases by 1.087 assuming age is held constant. For each additional year in age, wage on average decreases by -1.087 assuming productivity is held constant. For each additional dollar in wage, productivity units on average decrease by 1.087 assuming age is held constant. For each additional dollar in wage, age on average increases by 1.769 assuming productivity is held constant. Check