Two punch presses are used to produce a part for automotive…
Two punch presses are used to produce a part for automotive transmissions. Scrap costs for one critical dimension are excessive.To determine whether there is a difference in variability between the two presses, a Six Sigma project team ran a small experiment. The Minitab output for the statistical analysis is shown below. Using a significance level of α = 0.05, the team concludes that: