Question
At Webster Chemical Company, lumps in the caulking compound could cause difficulties in dispensing a smooth bead from the tube. Testing for the presence of
At Webster Chemical Company, lumps in the caulking compound could cause difficulties in dispensing a smooth bead from the tube. Testing for the presence of lumps destroys the product, so an analyst takes random samples. The following results are obtained:
| Tube No. | Lumps | Tube No. | Lumps | Tube No. | Lumps |
| 1 | 1 | 5 | 3 | 9 | 4 |
| 2 | 5 | 6 | 6 | 10 | 6 |
| 3 | 7 | 7 | 2 | 11 | 8 |
| 4 | 3 | 8 | 6 | 12 | 3 |
1) Determine the two-sigma lower control limit (LCL) for this process. Round your answer to two decimal places.
2) Based on your two-sigma control limits and the data in the table, is the process in control?
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Operations Management An Integrated Approach
Authors: R. Dan Reid, Nada R. Sanders
6th edition
1118952618, 978-1118952559, 1118952553, 978-1118952610
