Homework Help: statistics

Posted by lupita on Wednesday, May 9, 2012 at 11:55pm.

The data below are the ages of a random sample of 8 men in a bar. It is known that the population of ages are normally distributed with a standard deviation of 11. Determine the 93% confidence interval estimate of the population mean.

50 70 22 36 59 39 27 47

statistics - PsyDAG, Thursday, May 10, 2012 at 10:02am
Calculate mean = Σx/n

93% = mean ą 1.81 SEm

SEm = SD/√n

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