document.write( "Question 872381: 15. A population has a mean μ = 90 and a standard deviation σ = 27. Find the mean and standard deviation of a sampling distribution of sample means with sample means with sample size n=81 \n" ); document.write( "
Algebra.Com's Answer #526109 by stanbon(75887)![]() ![]() ![]() You can put this solution on YOUR website! A population has a mean μ = 90 and a standard deviation σ = 27. Find the mean and standard deviation of a sampling distribution of sample means with sample means with sample size n=81 \n" ); document.write( "------- \n" ); document.write( "Central Limit Theorem says:: \n" ); document.write( "mean of the sample means = mean of the population \n" ); document.write( "std of the sample means = (std of population)/sqrt(sample size) \n" ); document.write( "------------------------- \n" ); document.write( "Ans: \n" ); document.write( "mean of sample means = 90 \n" ); document.write( "std of sample means = 27/sqrt(81) = 27/9 = 3 \n" ); document.write( "============= \n" ); document.write( "Cheers, \n" ); document.write( "Stan H. \n" ); document.write( "------------- \n" ); document.write( " |