One day Natalie collected the data shown below.

					(ounces)
	Observations
Sample Number	1	2	3	4	5
1	23.84	24.15	23.98	24.21	24.22
2	24.25	24.08	23.88	24.06	23.98
3	24.21	23.90	24.02	23.93	23.84
4	23.93	24.08	23.97	24.32	24.20
5	23.99	24.17	24.01	24.10	24.28
6	24.03	24.21	24.31	24.27	24.23
7	24.16	23.90	24.35	24.27	24.31
8	24.07	24.00	23.88	24.15	24.06

As Natali did not know the standard deviation of the volume of bags of potato chip production operation, she decided to use the sample range to estimate the variability.

Develop 3-sigma control limits for the operation. CL = Answer ounces.

(Round and express to 3 decimal places, such as 23.456.)

Develop 3-sigma control limits for the sample range. CL = Answer ounces.

(Round and express to 3 decimal places, such as 0.456.)

Question 11

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Develop 3-sigma control limits for the sample range. UCL = Answer ounces.

(Round and express to 3 decimal places, such as 0.456.)

Question 12

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Is the process in statistical control?

There has been a concern relative to the quality of the operation in accurately filling the 24 ounces of potato chips.

The process is designed for a fill level of 24.00 0.30 ounces.

If the process standard deviation is given as 0.15 ounces, do you think this process is capable of meeting the design standard?

a.

The process is not in control, and the process is not capable.

b.

The process is in control, and the process is capable.

c.

The process is not in control, and the process is capable.

d.

The process is in control, and the process is not capable.

Question 9

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Develop 3-sigma control limits for the bagging operation. LCL = Answer ounces.

(Round and express to 3 decimal places, such as 23.456.)