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April 7th, 2007, 03:03 AM  #1 
Senior Member Joined: Dec 2006 From: New Jersey Posts: 378 Thanks: 1  Population Mean
How do we say that the observations of the random sample x1,x2,x3.....,xn from normal population of mean 'u'all have the same mean which is equal to the population mean 'u'? 

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