Five data entry operators work at the data processing department of the Georgia Bank. Each day for 30 days, the number of defective records in a sample of 250 records typed by these operators has been noted, as follows:

(a) Establish 3σ upper and lower control limits.
(b) Why can the lower control limit not be a negative number?
(c) The industry standards for the upper and lower control limits are 0.10 and 0.01, respectively. What does this imply about Georgia Bank€™s ownstandards?

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