What is the correct answer for part b?

A textile manufacturer wants to set up a control chart for irregularities (e.g., 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 1 18 6 13 2 6 7 11 3 8 19 4 7 9 7 5 15 10 17 Sample 11 12 13 14 15 Irregularities Sample 6 16 7 17 18 16 19 Irregularities 16 9 12 13 15 4 14 20 4 a. Using these data, set up a c-chart with z = 3. The UCL equals 21.60 and the LCL equals 1.30 . (Enter your responses rounded to two decimal places.) b. Suppose that the next five samples had 19, 13, 20, 22, and 14 irregularities. What do you conclude? O A. At least one of the sample points is less than the lower controllimit, so the process is not in control. B. All of the sample points are within the control limits, so the process is not in control. O C. At least one of the sample points is greater than the lower controllimit, so the process is not in control. D. At least one of the sample points is less than the upper controllimit, so the process is not in control. O E. All of the sample points are within the control limits, so the process is in control. OF. At least one of the sample points is greater than the upper control limit, so the process is not in control