The tolerance specified by the designer for the diameter of a shaft is 20.00 \[\pm \] 0.025 mm. The shafts produced by three different machines A, B and C have mean diameters of 19.99 mm, 20.00 mm and 20.01 mm respectively, with same standard deviation. What will be the percentage rejection for the shafts produced by machines A, B and C?

Same for the machine A, B and C since the standard deviation is same for the three machines

The tolerance specified by the designer for the diameter of a shaft is

1.	The tolerance specified by the designer for the diameter of a shaft is 20.00 \[\pm \] 0.025 mm. The shafts produced by three different machines A, B and C have mean diameters of 19.99 mm, 20.00 mm and 20.01 mm respectively, with same standard deviation. What will be the percentage rejection for the shafts produced by machines A, B and C?
A.	Same for the machine A, B and C since the standard deviation is same for the three machines
B.	Least for machine A
C.	Least for machine B
D.	Least for machine C.
Answer» B. Least for machine A

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