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 were collected from a sample provided by the supplier. SAMPLE IRREGULARITIES 1 1 2 4 5 6 7 8 9 10 6 3 8 4 6 6 2 5 8 a. Determine the c. So UCL and LCL for a c-chart with z=2. (Leave no cells blank. Round up any negative LCL value to "0". Round 'your answers to 2 decimal places.) cbar Sc UCL LCL b. Suppose the next five rolls from the supplier had three, one, four, six, and eight irregularities. Is the supplier process under control? O Yes O No