You want to obtain a sample to estimate the average number of hours per week a student from ACM works at their job while being a student. Based on previous evidence, you believe the population...

You want to obtain a sample to estimate the average number of hours per week a student from ACM works at their job while being a student. Based on previous evidence, you believe the population standard deviation is 8. You would like to be 99% confident that your estimate is within 1.5 hours of the true population mean. How large of a sample size is required?



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