Ball bearings are manufactured with a mean diameter of 6 millimeters (mm). Because of variability in the manufacturing process, the diameters of the ball bearings are known to be approximately normally distributed with a standard deviation of 0.058 mm. a. What proportion of the ball bearings have a diameter between 5.9 mm and 6.1 mm? Round your answer to the nearest thousandth (3 decimal places). b. Interpret the meaning of your answer to part a. c. Any ball bearings that have a diameter less than 5.9 mm or more than 6.1 mm are discarded. If 10,000 ball bearings are manufactured in a day, how many can the plant manager expect to discard?
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Ball bearings are manufactured with a mean diameter of 6 millimeters (mm). Because of variability in the manufacturing process, the diameters of the ball bearings are known to be approximately
a. What proportion of the ball bearings have a diameter between 5.9 mm and 6.1 mm? Round your answer to the nearest thousandth (3 decimal places).
b. Interpret the meaning of your answer to part a.
c. Any ball bearings that have a diameter less than 5.9 mm or more than 6.1 mm are discarded. If 10,000 ball bearings are manufactured in a day, how many can the plant manager expect to discard?
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