There is a lawn mower used to cut a putting green. The putting green needs to be 6.53 inch long with a tolerance of +/- 1.50 inches 

The lawn mower that mows the lawn has a mean of 7.70 inches with a standard deviation of 0.130 inches.

Compute the process capability ratio (Cp) and the process capability index (Cpk).

3a.) Cp = _____________ __________ (Go to 4decimal places), place answer on this line, show your work on next page. I want a number here, not a word.

3b.) Cpk = ______ ________________   (Go to 4 decimal places), place answer on this line, show your work on next page. I want a number here, not a word. [hint Cpk is not zero. Zero is not the answer]

3c.) Does the process meet 6 sigma quality? (yes or no).   

3d.) If not, then does the standard deviation have to be changed? In other words; is the “Cp” value not O.K? If Cp is not O.K., then your answer would be yes. If “Cp” is O.K. then answer would be no.(yes or no).                                              

3e.) If standard deviation has to be changed, what does it have to be changed to?________________

3f.) If process does not meet 6 sigma, does the mean have to be changed? In other words, is the Cpk value not O.K. If it is not O.K.; then your answer would be yes.   If Cpk is O.K. answer would be no. (yes or no).                     

3g).. If mean has to be changed, what does the mean have to be changed to in order to achieve six sigma quality.        

_________________________________ (go to four decimal places), place answer on this line, I want a number here, not a word.

 

Answer rating: 100% (QA)

3a The process capability ratio Cp can be calculated as Cp Upper specification limit Lower specifica... View the full answer