A shirt manufacturer buys cloth by the 100 yard roll from a supplier. For setting up a control chart to manage the irregularities (e.g., loose threads and tears) the following data was collected from a sample provided by the supplier.

a. Determine the c¯ , Sp, UCL and LCL for a c -chart with z = 2. (Leave no cells blank - be certain to enter "0" wherever required. Round your answers to 2 decimal places.)