Question: Refer to Table 56.1. Factors for Computing Control Chart Limits:(3 sigma) for this problem Auto pistons at Wemming Chung's plant in Shanghai are produced in

Refer to Table 56.1. Factors for Computing Control Chart Limits:(3 sigma) for this problem Auto pistons at Wemming Chung's plant in Shanghai are produced in a forging process, and the diameter is a critical factor that must be controlled From sample sizes of 10 pintons produced each day, the mean and the range of this diameter have been as follows: Day 1 2 3 4 5 Meanx (mm) 156.9 155.2 155.6 155.5 154.6 Range R (mm) 4.2 4,6 4.3 4.8 4.7 a) What is the value of ? x = 155.56 mm (round your response to two decimal places). b) What is the value of R? R= mm (round your response to two decimal places). Sample Size, n Upper Range, D4 2 3 4 5 6 7 Mean Factor, A2 1.880 1.023 0.729 0.577 0.483 0.419 0.373 0337 3.268 2.574 2.282 2.115 2.004 1.924 1.864 1 816 Lower Range, D3 0 0 o 0 0 0.076 0.136 n 184 8 q 2 3 4 5 6 7 8 9 10 12 1.880 1.023 0.729 0.577 0.483 0.419 0.373 0.337 0.308 0.266 3.268 2.574 2.282 2.115 2.004 N1.924 1.864 1.816 1.777 1.716 0 0 0 0 0 0.076 0.136 0.184 0.223 0.284

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