Question: er Refer to Table $6.1. Factors for Computing Control Chart Limits (3 sigma) for this problem. Auto pistons at Wemming Chung's plant in Shanghai are

er Refer to Table $6.1. 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) 154.9 1552 1536 155,5 158.6 Range R (mm) 4.4 4,6 41 5.2 4.3 a) What is the value of a 156.56 mm (round your response to two decimal places), b) What is the value of R? R4.52 mm (round your response to two decimal places) c) What are the UCL, and LCL using 3-sigma? Upper Control Limit (UCL) - 156.95 mm (round your response to two decimal places). Lower Control Limit (LCL) -mm (round your response to two decimal places). In

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