In terms of public safety, how would the Cpk requirements for airplane parts compare to the requirements that donuts be perfectly round?
1) It would be critical the airplane parts have a much higher Cpk than the donuts.
2) Both products should have Cpks below .66 to avoid the risk of loss of life.
3) It would be critical the airplane parts have a much lower Cpk than the donuts.
4) Both products should have Cpks close to 2.0 to avoid the risk of loss of life.