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 these operators has been noted, as follows:

Sample No.	No. Defectives	Sample No.	No. Defectives	Sample No.	No. Defectives
1	6	11	6	21	18
2	5	12	6	22	12
3	18	13	16	23	6
4	11	14	3	24	6
5	11	15	10	25	13
6	8	16	9	26	9
7	11	17	12	27	13
8	8	18	4	28	6
9	7	19	18	29	11
10	12	20	16	30	4

a) Establish 3 upper and lower control limits.

UCLp = ______ (enter your response as a number between 0 and 1, rounded to three decimal places).

LCLp =______ (enter your response as a number between 0 and 1, rounded to three decimal places).

b) The industry standard for the upper control limit is 0.10. What does this imply about Birmingham Bank's own standards?

The industry standard is

-not as strict

-the same

-stricter than

the standard at Birmingham Bank.