Assignment:
Automobiles are randomly selected for a close examination for fit-and-finish defects, including such items as dirt specks in the paint and panels that are not properly aligned. Based on data collected for the following vehicles that were so inspected, construct a 3-sigma c-chart, then reach a conclusion regarding whether the process is in control.
|
Vehicle
Number
|
c = Number
of Defects
|
Vehicle
Number
|
c = Number
of Defects
|
|
1
|
4
|
11
|
6
|
|
2
|
7
|
12
|
10
|
|
3
|
4
|
13
|
5
|
|
4
|
9
|
14
|
10
|
|
5
|
9
|
15
|
7
|
|
6
|
8
|
16
|
6
|
|
7
|
7
|
17
|
8
|
|
8
|
6
|
18
|
5
|
|
9
|
7
|
19
|
7
|
|
10
|
5
|
20
|
11
|
Provide complete and step by step solution for the question and show calculations and use formulas.