Question: A process that is considered to be in control measures an ingredient in ounces. Below are the last 10 samples (each of size n=5) taken.

A process that is considered to be in control measures an ingredient in ounces. Below are the last 10 samples (each of size n=5) taken. The population process standard deviation, , is 1.50.

Sample

1 2 3 4 5 6 7 8 9 10
15 14 17 15 13 15 14 16 13 17
14 15 13 16 14 14 17 15 14 12
13 16 14 13 16 16 15 13 16 16
14 13 16 15 15 12 16 15 12 13
12 15 15 12 13 13 13 14 15 15

What is the _x ?

If z=3, what are the control limits for the mean chart?

What are the control limits for the range chart?

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