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A manager wants to conduct research on the amount of time staff spend traveling to and...

A manager wants to conduct research on the amount of time staff spend traveling to and from work each week. In the last year, the maximum amount of time was 12 hours while the minimum was 2 hours. The manager wants to be accurate within a range of + or - 30 minutes from the population mean and 99% confident. Calculate the sample size.

math   Statistics-And-Probability   
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