a) Establish 30 upper and lower control limits. UCL, -(enter your response as a number between 0 and 1, rounded to three decimal places), LCL - enter your response as a number between 0 and 1, rounded to three decimal places). b) Why can the lower control limit not be a negative number? O A Since the upper control lmit cannot be a negative number B. Since the percent of defective records is always a positive number. OC. Since the upper controllimit is positive. OD. Since the percent of defective records cannot be a negative number c) The industry standard for the upper controllimit is 0.10. What does this imply about Birmingham Bank's own standards? The industry standard is the standard at Birmingham Bank 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 250 nag records typed by these operators has been noted, as follows: Sample No 1 2 3 4 5 6 7 8 9 10 No. Defectives 7 4 18 10 12 9 12 9 6 12 Sample No. 11 12 13 14 15 16 17 18 19 20 No. Defectives 5 5 15 4 12 7 13 5 18 17 Sample No. 21 22 23 24 25 26 27 28 29 30 No Defectives 16 11 6 8 14 10 15 7 13 4