Answer:
UCLc =
25.7715519
LCLc =-4.171551971
find attached the C-chart(control chart)
Step-by-step explanation:
Sample Irregularities Sample Irregularity Sample Irregularity
1 18 6 11 11 10
2 14 7 4 12 16
3 6 8 10 13 5
4 14 9 12 14 15
5 8 10 9 15 17
Samples/Irre Cont'd
16 - 4
17 - 15
18 - 9
19 - 15
20 - 17
Using these? data, set up a? c-chart with z =33.
UCLc =
LCLc =
      Sample	irreg     mean(CL)	UCL	LCL
               ularities
1	18	10.8	25.77155197	-4.171551971
2	14	10.8	25.77155197	-4.171551971
3	6	10.8	25.77155197	-4.171551971
4	14	10.8	25.77155197	-4.171551971
5	8	10.8	25.77155197	-4.171551971
6	11	10.8	25.77155197	-4.171551971
7	4	10.8	25.77155197	-4.171551971
8	10	10.8	25.77155197	-4.171551971
9	12	10.8	25.77155197	-4.171551971
10	9	10.8	25.77155197	-4.171551971
11	11	10.8	25.77155197	-4.171551971
12	16	10.8	25.77155197	-4.171551971
13	5	10.8	25.77155197	-4.171551971
14	1	10.8	25.77155197	-4.171551971
15	17	10.8	25.77155197	-4.171551971
16	4	10.8	25.77155197	-4.171551971
17	15	10.8	25.77155197	-4.171551971
18	9	10.8	25.77155197	-4.171551971
19	15	10.8	25.77155197	-4.171551971
20	17	10.8	25.77155197	-4.171551971
find attached the C-chart