30 A shirt manufacturer buys cloth by the 100-yard roll from a supplier. For setting up...
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30 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. 75 69 55 44 86 9 2 10 4 a. Determine the c, Sp, UCL and LCL for a c-chart with z=2. (Leave no cells blank. Round up any negative LCL value to "O". Round your answers to 2 decimal places.) SAMPLE 1 2 IRREGULARITIES 2 3 3 5 C Sp UCL LCL b. Suppose the next five rolls from the supplier had four, four, four, three, and five irregularities. Is the supplier process under control? Yes O No 30 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. 75 69 55 44 86 9 2 10 4 a. Determine the c, Sp, UCL and LCL for a c-chart with z=2. (Leave no cells blank. Round up any negative LCL value to "O". Round your answers to 2 decimal places.) SAMPLE 1 2 IRREGULARITIES 2 3 3 5 C Sp UCL LCL b. Suppose the next five rolls from the supplier had four, four, four, three, and five irregularities. Is the supplier process under control? Yes O No
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