Question: The specifications for a plastic liner for concrete highway projects call for a thickness of 3.0 mm 0.1mm. The standard deviation of the process is
The specifications for a plastic liner for concrete highway projects call for a thickness of 3.0 mm 0.1mm. The standard deviation of the process is estimated to be 0.02 mm. What are the upper and lower specification limits for this product? The process is known to operate at a mean thickness of 3.0 mm. What is the Cpk for this process? About what percentage of all units of this liner will meet specifications?
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