please explain in detail....I am studying for a Exam...and give proper fomula

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In order to estimate the average time spent on the computer terminals per student at a local university, data were collected for a sample of 81 business students over a one-week period. Assume the population standard deviation is 1.8 hours. The standard error of the mean is? If the sample mean is 9 ho... Jun 12 2011 01:51 AM

 

Solution ID:609010 | This paper was updated on 26-Nov-2015

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