a) The design specifications for a small PVC liner for aconstruction project calls for a thickness of 3.0 mm  0.1 mm. Thestandard deviation of the process is 0.02 mm. What are the upperand lower specification limits for this product? The process isknown to operate at a mean thickness of 3.0 mm. What is the Cpk forthis process? Is the process capable of meeting designspecification?  Â
b) The following jobs are waiting to be processed at Spence’s AutoRepairs. These five jobs were logged as they arrived. Assume thatall jobs arrived on day 180 and today is day 200.
| Job  | Due Date (days) | Remaining Time (days) |
| 103 | 214 | 10 |
| 205 | 223 | 7 |
| 309 | 217 | 11 |
| 412 | 219 | 5 |
| 517 | 217 | 15 |
Using the Critical Ratio scheduling rule, what sequence wouldthe jobs be processed. [5 points]
| A. | a)Â Â Cpk = 1.67, therefore the process is capable ofmeeting design specification b)Â Â Critial Ratio sequence: Job 412, 205, 309, 103,517 |
| B. | a)Â Â Cpk = 0.67, therefore the process is not capableof meeting design specification b)Â Â Critial Ratio sequence: Job 517, 103, 309, 205,412 |
| C. | a)Â Â Cpk = 0.67, therefore the process is not capableof meeting design specification b)Â Â Critial Ratio sequence: Job 517, 103, 309, 205,412 |
| D. | a)Â Â Cpk = 1.67, therefore the process is capable ofmeeting design specification b) Critial Ratio sequence: Job 517, 103, 309, 205, 412 |
