Question

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 Mean Bold x overbar ​(mm) Range R ​(mm) 1 156.9 4.4 2 155.2 4.4 3 153.6 4.3 4 157.5 4.8 5 158.6 4.5 (​a) What is the value of x double overbar​?

Answer 1

Answer:

The value of x double overbar​ is 156.36.

Explanation:

x double overbar​ = [156.9 + 155.2 + 153.6 + 157.5 + 158.6 ]/5

                             = 156.36

 Therefore, The value of x double overbar​ is 156.36.