Homework Help: statistics

Posted by Annette on Monday, March 19, 2012 at 12:50am.

A sample of 352 subscribers to Wired magazine shows the mean time spent using the Internet is 13.4 hours per week, with a sample standard deviation of 6.8 hours. Find the 95 percent confidence interval for the mean time Wired subscribers spend on the Internet.

statistics - PsyDAG, Monday, March 19, 2012 at 3:34am
95% = mean ą 1.96 SEm

SEm = SD/√n

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