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A textile manufacturer wants to set up a control chart for irregularities (0.9., oil stains, shop soil, loose threads, and tears) per 100 square yards of carpet. The following data were collected from a sample of twenty 100-square-yard pieces of carpet: Sample Irregularities Sample Irregularities Sample Irregularities Samplo Irregularities 18 13 11 11 16 15 6 12 8 16 4 14 10 20 a. Using these data, set up a c-chart with z=3 The UCL equals and the LCL equals (Enter your responses rounded to two decimal places.) 11 13 11 10 5 14 6 8 15 13 14 18 16 17 18 19 9 5 15 15 12
 
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