Question: Chapter 6 s question 7, part a and part b: Auto pistons at Wemming Chung's plant in Shanghai are produced in a forging process, and

Chapter 6 s question 7, part a and part b: 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: a)What is the value of x ? b) What is the value of R ? c) What are the UCL x and LCLx, using 30 ? Plot the data. d) What are the UCLR and LCLR, using 30 ? Plot the data. e) If the true diameter mean should be 155mm and you want this as your center (nominal) line, what are the new UCLX and LCLx? 155.16 and 4.48 4.48 and 146.16 5.48 and 156.16 None of the above 146.16 and 4.48

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