Question: The upper and lower specifications for time to complete service are 12.5 minutes and 7.2 minutes respectively. The process capability ratio is 1.75.What is the

The upper and lower specifications for time to complete service are 12.5 minutes and 7.2 minutes respectively. The process capability ratio is 1.75.What is the standard deviation of the process? (Round your answer to 3 decimal places)

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