U-learn University uses a c-chart to monitor student complaints per week. Complaints have been recorded over the past ten weeks. Develop 3-sigma control limits using the following data:

Sample .................. Number of Complaints

1 .......................................... 0

2 .......................................... 3

3 .......................................... 1

4 .......................................... 1

5 .......................................... 0

6 .......................................... 0

7 .......................................... 3

8 .......................................... 1

9 .......................................... 1

10 ......................................... 2