1. A quality control inspector at the ABC Bakery was interested in the average number of chocolate chips in the ABCs flagship Amazingly Big Cookie. A 5-piece package is sold for $20. The inspector has taken seven samples with five cookies and counted how many chocolate chips in each cookie. The data is shown in the following table.

How many chocolate chips in a chocolate chip cookie
	Observations
Sample Number	1	2	3	4	5
1	10	9	10	9	12
2	9	9	11	9	10
3	13	9	10	10	9
4	10	10	11	10	10
5	12	10	9	12	10
6	13	10	8	11	8
7	8	8	12	12	9

As the inspector did not know the standard deviation of the chocolate chip cookie production operation, she decided to use the sample range to estimate the variability.

Develop 3-sigma control limits for the operation. CL = ______chips. Round and express to 3 decimal places, such as 23.456.

2. Develop 3-sigma control limits for the operation. LCL = ______chips. Round and express to 3 decimal places, such as 23.456.

3. Develop 3-sigma control limits for the sample range. CL = _______chips. Round and express to 3 decimal places, such as 3.456.

4. Develop 3-sigma control limits for the sample range. UCL = _______chips. Round and express to 3 decimal places, such as 3.456.