Question: A lumber processing operation cuts pine posts with a standard deviation in millimeters equal to 99 mm. The specs for products at this stage are
- A lumber processing operation cuts pine posts with a standard deviation in millimeters equal to 99 mm. The specs for products at this stage are 2500140mm.
- What is the Cp ratio?
- A recent production run of 100,000 posts had an average of 2550mm, and the process was considered to be under control. What is the value of Cpk ?
- How many boards from the production run described in part 2) will not meet specifications?
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