Management of the Agua Golf Pro Shop collects data on the number of dissatisfied customers for their visits using a survey of customers conducted soon after their golf rounds are completed. Customers respond to a single question indicating on a Yes/No scale whether they were satisfied or dissatisfied with their golf rounds. The data provided below gives the number of dissatisfied customers noted in 150 responses over 12 weeks. Pro Shop Manager Nile Rodgers, has requested your help in using a control chart to assess the process. Please calculate and report what is the value of theCenter Line (only)for the Proportion (p) control chart. (Nile Rodgers can complete the rest of the calculations for this p chart). Please round your final answer in proportion to 2 places after the decimal.

Week	Number Dissatisfied
1	12
2	9
3	15
4	18
5	12
6	15
7	6
8	27
9	15
10	12
11	9
12	12