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To determine whether a metal lathe that produces machine bearings is properly adjusted, a random sample...

To determine whether a metal lathe that produces machine bearings is properly adjusted, a random sample of 36 bearings is collected and the diameter of each is measured. If the standard deviation of the diameters of the bearings measured over a long period of time  is 0.001 inch, what is the approximate probability that the mean diameter of the sample of 36 bearings will fall between (mu- 0.0001) and (mu + 0.0001) inch where mu is the population mean diameter of the bearings?

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Solution iven that 6 3 6 6 X o oool 663 030 o-ooo 1 667- Using table. Te Probability is 0-45

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