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

Thompson and Thompson is a steel bolts manufacturing company. Their current steel bolts have a mean diameter of 139 millimeters, and a variance of 49.

If a random sample of 36 steel bolts is selected, what is the probability that the sample mean would differ from the population mean by more than 2.9 millimeters? Round your answer to four decimal places.

Is there any online calculators to help me with this question? Or any excel formulas? Thank you for your help

Math   Statistics-And-Probability   
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