Colding Motors has decided to use a c-Chart to monitor the number of defects per minivan produced by their production process. The c-Chart should be constructed with 22-sigma control limits. The quality control manager randomly samples one minivan at 66 successively selected time periods and counts the number of defects in the minivan.

Sample Defects 1 4 2 11 3 8 4 4 5 9 6 3