4. Canine Gourmet Company
= 45 g, n = 10, = 6 g
a. From Table 5.1,
= 0.308, = 0.223, = 1.777
= 1.777(6 g) = 10.662 g
= 0.223(6 g) = 1.338 g
= 45 g + 0.308(6 g) = 46.85 g
= 45 g – 0.308(6 g) = 43.15 g
b. The range is in control, the averages of samples 2, 4, and 5 are out of control which
means the process is out of control.
5a. Aspen Plastics
11. Jim’s Outfitters, Inc.
17. Management at Webster
