Floyd Electric is fabricating flanges for a new electrical motor. The flange is to be 25 millimeters in diameter with an upper tolerance limit of 26.5 millimeters and a lower tolerance limit of 23.5 millimeters
Bill Floyd took a sample consisting of ten flanges, measured the diameter and recorded the observations in the table.
25.69 25.58 24.78 24.94 24.87 24.63 25.70 25.52 24.95 24.91
What is Floyd Electric's process standard deviation?
A) 0.15
B) 0.17
C) 0.42
D) 0.39
Answer: C
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