EBK OM
6th Edition
ISBN: 9781305888210
Author: Collier
Publisher: YUZU
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Chapter 15, Problem 5PA
Summary Introduction
Interpretation: The sigma level needs to be determined based on the given data.
Concept Introduction:The defects per million opportunities gives the measure of quality and hence sigma level can be measured with the help of dpmo.
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The production process for an electronic product has 12 major steps. If each of the first six production steps is at a 5-Sigma quality level and the remaining steps are at a 5.5 sigma quality level, calculate the total percentage of error-free products manufactured.
There is a 4 percent error at a specific point in a production process. If an inspector is placed at this point, all the defects can be detected and eliminated. The inspector would cost $8 per hour and could inspect unit in the process at the current production rate of 45 per hour.
If no inspector is hired and defects are allowed to pass a point, there is a cost of $9 per defective unit to correct the defects later.
If an inspector is hired, what will be the inspection cost per unit? (Round to 3 decimal places.)
If an inspector is hired, what will be the defective cost per unit? (Round to 3 decimal places.)
Should an inspector be hired based on cost alone?
What is a capable process? Is a capable process a perfect process? In other words, does a capable process produce output that meets specifications?
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