At Webster Chemical Company, lumps in the caulking compound could cause difficulties in dispensing a smooth bead

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At Webster Chemical Company, lumps in the caulking compound could cause difficulties in dispensing a smooth bead from the tube. Even when the process is in control, an average of four lumps per tube of caulk will remain. Testing for the presence of lumps destroys the product so an analyst takes random samples. The following results are obtained:

At Webster Chemical Company, lumps in the caulking compound coul


Determine the c-chart two-sigma upper and lower control limits for this process. Is the process in statistical control?

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Operations management processes and supply chain

ISBN: 978-0136065760

9th edition

Authors: Lee J Krajewski, Larry P Ritzman, Manoj K Malhotra

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