A manufacturing process produces 6,800 parts and is set up so that the mean (expected) dimension...
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A manufacturing process produces 6,800 parts and is set up so that the mean (expected) dimension is in the middle of the specified tolerance range of 500 45 (symmetrical). Assuming that the standard deviation of the process is 0.2 mm and the produced dimensions are normally distributed, calculate the following: Note: summary statistics are available at the end of the test questions. Q 4(a) Process Capability Index. Q 4(b) Number of parts that are expected to be scrap (out of tolerance). [5 Marks] [20 Marks] A manufacturing process produces 6,800 parts and is set up so that the mean (expected) dimension is in the middle of the specified tolerance range of 500 45 (symmetrical). Assuming that the standard deviation of the process is 0.2 mm and the produced dimensions are normally distributed, calculate the following: Note: summary statistics are available at the end of the test questions. Q 4(a) Process Capability Index. Q 4(b) Number of parts that are expected to be scrap (out of tolerance). [5 Marks] [20 Marks]
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Managing Controlling and Improving Quality
ISBN: 978-0471697916
1st edition
Authors: Douglas C. Montgomery, Cheryl L. Jennings, Michele E. Pfund
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