A bag for the space program has a thickness requirement of 3.0 mm +/- 1.0 mm. The standard deviation has been shown to be .02 mm. What are the upper and lower specifications limits for this product? Historically, the process mean for the bag has been 3.0 mm. What is the Cpk for this process? Also, what percentages of the bags will meet specifications?

A bag for the space program has a thickness requirement of 3.0 mm +/- 1.0 mm. The standard deviation has been shown to be .02 mm. What are the upper and lower specifications limits for this product? Historically, the process mean for the bag has been 3.0 mm. What is the Cpk for this process? Also, what percentages of the bags will meet specifications?

 

Solution

To be calculated:

a) Upper specification limit (USL) and Lower specification limit (LSL)

b) Capability, Cpk

c) Percentages