Webster Chemical Company produces mastics and caulking for the construction industry. The product is blended in large mixers and then pumped into tubes and capped. Webster is concerned whether the filling process for tubes of caulking is in statistical control. The process should be centered on 8 ounces per tube. Six samples of 3 tubes are taken and each tube is weighed in ounces. Tube number Sample 1 2 3 1 7.68 7.81 8.11 2 8.18 7.99 8.06 3 7.89 7.93 8.09 4 8.16 7.97 8.07 5 7.81 8.14 7.88 6 8.12 8.13 8.14 Develop upper and lower control limits for the X-bar chart. Develop upper and lower control limits for the R-chart. Construct the X-bar chart. Construct the R chart. Is the process under control? Explain.
Webster Chemical Company produces mastics and caulking for the construction industry. The product is blended in large mixers and then pumped into tubes and capped. Webster is concerned whether the filling process for tubes of caulking is in statistical control. The process should be centered on 8 ounces per tube. Six samples of 3 tubes are taken and each tube is weighed in ounces. Tube number Sample 1 2 3 1 7.68 7.81 8.11 2 8.18 7.99 8.06 3 7.89 7.93 8.09 4 8.16 7.97 8.07 5 7.81 8.14 7.88 6 8.12 8.13 8.14 Develop upper and lower control limits for the X-bar chart. Develop upper and lower control limits for the R-chart. Construct the X-bar chart. Construct the R chart. Is the process under control? Explain.
MATLAB: An Introduction with Applications
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ISBN:9781119256830
Author:Amos Gilat
Publisher:Amos Gilat
Chapter1: Starting With Matlab
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- Webster Chemical Company produces mastics and caulking for the construction industry. The product is blended in large mixers and then pumped into tubes and capped. Webster is concerned whether the filling process for tubes of caulking is in statistical control. The process should be centered on 8 ounces per tube. Six samples of 3 tubes are taken and each tube is weighed in ounces.
|
Tube number |
|||
Sample |
1 |
2 |
3 |
|
1 |
7.68 |
7.81 |
8.11 |
|
2 |
8.18 |
7.99 |
8.06 |
|
3 |
7.89 |
7.93 |
8.09 |
|
4 |
8.16 |
7.97 |
8.07 |
|
5 |
7.81 |
8.14 |
7.88 |
|
6 |
8.12 |
8.13 |
8.14 |
|
Develop upper and lower control limits for the X-bar chart.
- Develop upper and lower control limits for the R-chart.
- Construct the X-bar chart.
- Construct the R chart.
- Is the process under control? Explain.
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