Determine the upper and lower control limits

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The following manufactured products have a nominal time of 80 minutes. Six samples of seven observations each have been taken, and the results are as listed. Using two SPC techniques, determine the upper and lower control limits (using a 95.45% level of significance) and respond to the following questions: Present your control charts and briefly discuss your findings. Sample 1 78 80 79 78 80 79 81 Sample 2 77 78 79 79 75 80 80 Sample 3 79 81 80 79 80 80 81 Sample 4 77 80 80 79 80 80 79 Sample 5 81 76 80 80 78 81 78 Sample 6 77 78 79 79 75 80 80.

Reference no: EM132225349

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