Question: Eight samples which contain 30 observations per sample have been collected and the number of defects are recorded as below. Sample Defects 1 1 2

Eight samples which contain 30 observations per sample have been collected and the number of defects are recorded as below.
Sample Defects
1 1
2 2
3 8
4 3
5 2
6 1
7 3
8 2
a. What is the upper and lower control limits?
b. Is the process in control?

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