Use computer software to work Exercise 12.37.

Data From Exercise 12.37

12.37 An experimenter wants to compare the time to failure y after rebuilding a robotic welder by three different methods but adjusting for the covariate x = age of robotic welder. Suppose the data, in thousands of hours, are x Method I Method 2 Method 3 y x y x y 7 11 6 252 6 453 4 5 3 65 6 5 4 4 8 4 The resulting sum of squares error are SSEx = 15.917, SSEtr. = 10.000, and SSEtr., x = 1.833. Assuming that the analysis of covariance model is reasonable, conduct the F-test for treatment differences and the F-test for the covariate x. Take = 0.05.