Homework Help: statistics

Posted by Pat on Monday, March 26, 2012 at 7:56pm.

the dean of admissions in a large university has determined that the scores of the freshman class in a mathematics test are normally distributed with a mean of 86 and a standard deviation of 11. A sample of 50 students is selected at random from the entire freshman class. Based on this information, what is the standard deviation of the sampling distribution of the sample mean?

statistics - PsyDAG, Tuesday, March 27, 2012 at 12:24pm
SEm = SD/√n

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