HW3sp07solns

HW3sp07solns - BUAD 310 HW3 Soln BUAD 310 Homework 3 Soln...

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BUAD 310 HW3 Soln BUAD 310 Homework 3 Soln due Friday, March 30, 2007 in class  1. Effect of Training on Production. Four training programs are being considered. The time required for each program is:  Program A, 6 hours; Program B, 7 hours; Program C, 8 hours; and Program D, 9 hours.  Twelve workers were randomly assigned to the four programs and a week later their  production output was recorded. Training Hours 7 6 7 8 8 9 9 9 6 9 8 6 Production 83 89 86 162 168 159 194 175 64 247 195 99 a. Find the regression equation for predicting production based on the number of training  hours. (Enter the data into Minitab in columns instead. Then use Stat   Regression  Regression) Soln : Production = - 167 + 40.5 Hours b. What is the estimated production amount attributable to a single additional hour? Soln : 40.5 units per each additional hour c. Create a plot of the data set with the estimated regression line. (Use Stat   Regression  Fitted Line Plot) Soln : See plots. d. Find the expected production and residual values for the first trainee; i.e., 7 hours trained  and 83 units produced. Interpret both of these values. Soln : Production = -167 + (40.5) (7) = 116.39 Residual = 116.39 – 83 = 33.39 e. What is the intercept? What is its meaning? Soln
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HW3sp07solns - BUAD 310 HW3 Soln BUAD 310 Homework 3 Soln...

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