A manufacturing analyst collects fifteen samples of 200 observations each during a production shift. The number of defective units in each sample is recorded. Construct the relevant control chart. Is this process in control? Why?

Sample	Number of defects
1	8
2	5
3	8
4	6
5	7
6	3
7	8
8	3
9	6
10	5
11	5
12	5
13	5
14	6
15	8

Note: For the p chart, UCL and LCL formulas