To determine whether a metal lathe that produces machine bearings is properly adjusted, a random sample of
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To determine whether a metal lathe that produces machine bearings is properly adjusted, a random sample of 25 bearings is collected and the diameter of each is measured.
a. If the standard deviation of the diameters of the bearings measured over a long period of time is .001 inch, what is the approximate probability that the mean diameter x of the sample of 25 bearings will lie within .0001 inch of the population mean diameter of the bearings?
b. If the population of diameters has an extremely skewed distribution, how will your approximation in part a be affected?
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The mean diameter of the bearings is unknown with a standard deviation of ...View the full answer
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Muhammad Umair
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