A process manufactures ball bearings with a diameters that are normally distributed with mean 25.1 millimeters and standard deviation 0.08 millimeter.
(a) What proportion of the diameters are less than 25.0 millimeters? Express your answer in words.
(b) What proportion of the diameters are greater than 25.4 millimeters? Express your answer in words.
(c) Between what two values are the middle 60% of the diameters? Express your answer in words.