2. A metal fabricator produces connecting rods with an outer diameter that has a 1 ± .01-inch specification. A machine operator takes several sample measurements over time and determines the sample mean outer diameter to be 1.002 inches with a standard deviation of .003 inch. a. Calculate the process capability index for this example. b. What does this figure tell you about the process?

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A metal fabricator produces connecting rods with an outer diameter that has a 1 ± .01-inch specification. A machine operator takes several sample measurements over time and determines the sample mean outer diameter to be 1.002 inches with a standard deviation of .003 inch. a. Calculate the process capability index for this example. b. What does this figure tell you about the process?
Statistical Quality Control
Chapter 13
387
assembly and will have to be replaced later at a cost of $10 each when they are detected in
final product testing. (Answer in Appendix E)
a. Should this inspection position be eliminated?
b. What is the cost to inspect each unit?
c. Is there benefit (or loss) from the current inspection process? How much?
2. A metal fabricator produces connecting rods with an outer diameter that has a 1 ± .01-inch
specification. A machine operator takes several sample measurements over time and determines
the sample mean outer diameter to be 1.002 inches with a standard deviation of .003 inch.
a. Calculate the process capability index for this example.
b. What does this figure tell you about the process?
detected into
Transcribed Image Text:Statistical Quality Control Chapter 13 387 assembly and will have to be replaced later at a cost of $10 each when they are detected in final product testing. (Answer in Appendix E) a. Should this inspection position be eliminated? b. What is the cost to inspect each unit? c. Is there benefit (or loss) from the current inspection process? How much? 2. A metal fabricator produces connecting rods with an outer diameter that has a 1 ± .01-inch specification. A machine operator takes several sample measurements over time and determines the sample mean outer diameter to be 1.002 inches with a standard deviation of .003 inch. a. Calculate the process capability index for this example. b. What does this figure tell you about the process? detected into
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