1 Suppose we have a turning operation in a process where we

1. Suppose we have a turning operation in a process where we are manufacturing pins to a diameter of .125 +/- .005 inches. We have five different machines making the same part and we take five random samples from each machine to obtain the following diameter data:

Machine

a) From the analysis of these data can we conclude that the factor \"machine\" has an effect with =0.05? Check assumptions.

b) If we have a significant difference use the Tukey’s method to evaluate the differences, use the same level of significance.

Solution