Auto pistons at Wenming 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). Day 1 2 3 4 5 Mean x (mm) 158.9 151.2 155.6 153.5 154.6 Range R (mm) 4.4 4.6 3.9 5.0 4.7

(a) What is the value of n