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December 22, 2014

Homework Help: statistics

Posted by joe on Friday, November 23, 2012 at 9:29pm.

Random samples of size n are selected from a normal population whose standard deviation is know to be 2. Suppose you want 90% of the area under the sampling distribution of x bar to lie within + or - 1 unit of a population mean u. Find the minimum sample size n that satisfies the requirment.

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