1. (a) Using a normal distribution, define what is meant by both “ machine” and “process”...

1.

(a) Using a normal distribution, define what is meant by both “ machine” and “process” capability and explain the difference by providing three measures that are used in each case. [8 marks]

(b) The following data was obtained from subgroups of parts manufactured to 10.5 mm +/- 0.5 mm

Size Range (mm) Quantity

10.0-10.2 1

10.2 -10.4 4

10.4 -10.6 9

10.6-10.8 6

Determine :

The mean and standard deviation [use N = 20 ] [6 marks]

The values of the capability indices Cm and Cp [4 marks]

If the operation can be judged as “capable” if considered to be a machine or alternatively a process? [2 marks]

Expert Solution

samet mamat answered 2 years ago

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