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

Exercise 24

Cereal boxes are to be filled to be between 11.9 and 12.2 ounces. The boxes are automatically filled by a machine. Thirty sampled boxes are randomly selected, and a grand mean of 12.1 ounces and a standard deviation of 0.05 ounce are calculated. Based on these results, what can you conclude about the capability of the cereal-filling machine?