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 ? x= mm (round your response to two decimal places). b) What is the value of R ? R=mm (round your response to twe decimal placen). a) What is the value of x ? x=mm(roundyourresponsetotwodecimalplaces). b) What is the value of R ? R=4.4mm(roundyourresponsetotwodecimalplaces). c) What are the UCLx and LCLx-using 3-sigma? Upper Control Limit (UCL)=mm (round your response to two decimal places)