Managing Supply Chain and Operations 1st Edition by Thomas Foster ,Scott Sampson,Cynthia Wallin,Scott Webb

Exercise 21

To fit correctly, a metal bar must be cut to be between 45 and 50 centimeters in length. A random sample of 40 metal bars was selected, and the bars were measured. The sampled bars yielded a grand mean of 48.2 centimeters with a standard deviation of 0.4. Based on these results, is the process capable of producing the metal bars within the specifications?