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Thompson and Thompson is a steel bolts manufacturing company. Their current steel bolts have a mean diameter of 149 millimeters, and a standard deviation of

Thompson and Thompson is a steel bolts manufacturing company. Their current steel bolts have a mean diameter of 149

millimeters, and a standard deviation of 8

millimeters.

If a random sample of 50

steel bolts is selected, what is the probability that the sample mean would be less than 148.1

millimeters? Round your answer to four decimal places.

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