Question: 10. The upper and lower specification limits for a component are 3.98 and 4.02 inches, respectively. The process standard deviation is 0.004, and the process

10. The upper and lower specification limits for
10. The upper and lower specification limits for
10. The upper and lower specification limits for a component are 3.98 and 4.02 inches, respectively. The process standard deviation is 0.004, and the process average is 4.005 inches. Is this process capable of achieving three-sigma performance? (10 pts.) 11. Thermostats are subjected to rigorous testing before they are shipped to air conditioning technicians around the world. Results from the last five samples are shown in the table. Is the process under control? (12 pts.) Unit # Sample 1 Sample 2 Sample 3 Sample 4 Sample 5 1 173.5 70.8 1722 73.6 171.0 2 71.3 71.0 73.1 72.7 72.2 3 170,0 72.6 171.9 724 733 14 21.1 170.6 20.3 1742 73.6 20.8 70.7 70.7 173.5 7

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