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Auto pistons at Womming Chung’s plant in Shanghai are produced in a forging process, and the diameter is a critical factor that must be contred From samo ses 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) 1589 1512 1556 1555 1580 Range R (mm) 44 45 43 50 47 a) What is the value of Y 156.90 mm (round your response to two decimal places) b) What is the value of R R = 48 mm round your response to two decimal places) c) What are the UCL, and LCL using 3-sigma? Upper Control (UCL) = 157 37 mm (round your response to two decimal places) Lower Control Limit (LCL) – 15455 mm (round your response to two decimal places d) What are the UCLR and LCL Sing 3.gma? Upper Control Lime (UCLR) mm fround your response to ho decimal places)