The quality control manager at a computer manufacturing company believes that the mean life of a computer is 120 months, with a standard deviation of 10 months. If he is correct, what is the...



The quality control manager at a computer manufacturing company believes that the mean life of a computer is 120 months, with a standard deviation of 10 months.






If he is correct, what is the probability that the mean of a sample of 90 computers would differ from the population mean by less than 0.85months? Round your answer to four decimal places.





Jun 02, 2022
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