The specifications for a plastic liner forconcrete highway projects calls for a thickness of 3.0mm + or – 0.1 mm. The standard deviation of the process isestimated to be 0.02 mm. What are theupper and lower specification limits for this project? The process is known to operate at a meanthickness of 3.0 mm. What is the Cpk forthis process? About what % of all unitsof this liner will meet specifications?
So would lower specification be 2.9 which is 3.0-0.1 and upper specification 3.0+0.1 or 3.1?
cpk=minimumof (3.0) - (2.9) / 3(.02) = 0.1 / .06 = 1.6666666666667
So what % of all units of this liner will meet specifications?
So would lower specification be 2.9 which is 3.0-0.1 and upper specification 3.0+0.1 or 3.1?
cpk=minimumof (3.0) - (2.9) / 3(.02) = 0.1 / .06 = 1.6666666666667
So what % of all units of this liner will meet specifications?