Question: help Refer to Table S6 1 - Factors for Computing Control Chart Limits (3.sigma) for this problem Auto pistons at Wemming Chung's plant in Shanghai

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Refer to Table S6 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 pistons produced each day, the mean and the range of this diameter have been as follows: Day 1 2 3 4 5 Mean x (mm) 1549 1552 155.6 155.5 158.6 Range R (mm) 42 4.4 3.9 48 4.3 a) What is the value of ? * = 155.96 mm (round your response to two decimal places). b) What is the value of R? R= 4.32 mm (round your response to two decimal places). c) What are the UCL, and LCL, using 3-sigma? Upper Control Limit (UCL) -mm (round your response to two decimal places)

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