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 is the process standard deviation?
A) 0.1
B) 0.15
C) 0.20
D) 0.25

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The Answer of 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 is the process standard deviation?
A) 0.1
B) 0.15
C) 0.20
D) 0.25

The Upper and Lower Specifications for a Service Are 10