Homework SourseIn painting an automobile at the factory the thickness of th
In painting an automobile at the factory, the thickness of the color coat has a process mean of 1.00mm and a process std. dev of 0.07mm. 20 samples of 5 cars were tested, resulting in the mean paint thickness shown the data set. Construct the upper and lower control limits for the x-bar chart, using the given process parameters. Plot the data on the control chart. Is this process in control? Explain
Paint Thickness: Means of 20 Samples (n= 5)
| Mils |
| 0.996 |
| 0.960 |
| 1.016 |
| 1.017 |
| 1.001 |
| 0.988 |
| 1.006 |
| 1.073 |
| 1.032 |
| 1.021 |
| 0.984 |
| 1.019 |
| 0.997 |
| 1.024 |
| 1.033 |
| 1.030 |
| 0.994 |
| 0.980 |
| 0.977 |
| 1.037 |
Solution
