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 350 records typed by these operators has been noted, as follows: Sample

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

a) Establish 3 upper and lower control limits.

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