Question

a.Below table shows the number of conforming products in 20 days. (a) Set up the fraction nonconforming control chart for this process. Plot the preliminary data in Table on the chart. Is the process in statistical control? B.Assume that assignable causes can be found for any out-of-control points on this chart. What center line and control limits should be used for process monitoring in the next period?

Day	Number of Nonconforming
1	0
2	3
3	4
4	6
5	5
6	2
7	8
8	9
9	4
10	2
11	6
12	4
13	8
14	0
15	7
16	20
17	6
18	1
19	5
20	7

Answer 1