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April 1, 2015

Homework Help: Statistics

Posted by Mike on Monday, June 18, 2012 at 10:54pm.

A 95% confidence interval for a population mean, ?, is given as (18.985, 21.015). This confidence interval is based on a simple random sample of 36 observations. Calculate the sample mean, x ?, and the sample standard deviation, s. Assume that all assumptions and conditions necessary for inference are satisfied.

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