1. A cell phone manufacturer tests a sample of 100 units every day for quality control. The following list shows the number of defective units for the past 15 days.

1. Create an control chart for this process and indicate if the process is in control.

Day	# of defective units
1	12
2	14
3	12
4	45
5	22
6	17
7	10
8	16
9	27
10	36
11	8
12	10
13	10
14	12
15	10