Question: The upper and lower specifications for a service are 10 min. and 8 min., respectively. The process average is 9 min. and the process capability

The upper and lower specifications for a service are 10 min. and 8 min., respectively. The process average is 9 min. and the process capability ratio is 1.33. What sigma quality level does this process possess?

Group of answer choices

5 sigma quality level

2 sigma quality level

4 sigma quality level

3 sigma quality level

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