document.write( "Question 955023: If X has a normal distribution with mean 80 and standard deviation 12, what is the distribution of the mean of a sample of 9 of these values? Give the values of the parameters. \n" ); document.write( "
Algebra.Com's Answer #583351 by stanbon(75887)\"\" \"About 
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Mean of the sample means = 80
\n" ); document.write( "Std of the sample means = 12/sqrt(9) = 4
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