Question: #6 5. The UCL and LCL for an X-bar chart are 25 and 15 respectively. The central line is 20, and the process variability is

5. The UCL and LCL for an X-bar chart are 25 and 15 respectively. The central line is 20, and the process variability is considered to be in statistical control. The results of the next six sample means are 18, 23, 17, 21, 24, and 16. What should you do? a. Explore the assignable causes because the second, fourth, and fifth samples are above the mean. b. Explore the assignable causes because there is a trend. Nothing: the process is in control. Explore the assignable causes because there is a run. 6. In general, when is a process considered capable? 1. When samples on the SPC charts are within control limits over a long period of time b. When lots are not rejected during acceptance sampling c. When the process distribution fits appropriately within product specifications d. When the process capability ratio and/or the capability index is less than 1 7.One of the biggest enemies of quality management is: a. An integrated business strategy b. Top management support Process variability d. Highly productive people

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