dolution

Five data entry operators work at the data processing department of the Birmingham Bank Each day for 30 days the number of defective records in a sample of 300 records typed by those operators has been noted, as follows No. Defectives Sample No. No Defectives 16 13 Sample No 1 2 3 4 5 6 7 8 9 10 Sample No. 11 12 13 14 15 16 17 18 19 20 No. Defectives 7 4 15 5 10 8 13 3 18 17 4 20 10 12 8 12 8 7 22 23 24 25 13 NS38888 ? ? 0 3 0 2 3 ?? : 15 27 28 29 30 12 a) Establish 30 upper and lower control limits UCLfotor your response as a number between Card , rounded to three decimal places)