1. A company orders handmade ties from a silk weaver and requires the width of the ties to between 3 inches and 3.3 inches. The handmade ties are made by artisans who can produce ties with a mean of 3.1 inches and standard deviation of 0.01 inch. The process capability index for the tie making process is:
2. a.3.33
3. b.6.66
4. c.10
5. d.5