document.write( "Question 1192316: samples of size 81 are taken from a population of size 500 with mean 10 and standard deviation is 3 find standard deviation of sample means? \n" ); document.write( "
Algebra.Com's Answer #849049 by CPhill(1959)\"\" \"About 
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**1. Identify the given values:**\r
\n" ); document.write( "\n" ); document.write( "* Population standard deviation (σ): 3
\n" ); document.write( "* Sample size (n): 81\r
\n" ); document.write( "\n" ); document.write( "**2. Calculate the standard deviation of the sample means (standard error of the mean):**\r
\n" ); document.write( "\n" ); document.write( "* Standard error of the mean (σ_x̄) = σ / √n\r
\n" ); document.write( "\n" ); document.write( "* σ_x̄ = 3 / √81
\n" ); document.write( "* σ_x̄ = 3 / 9
\n" ); document.write( "* σ_x̄ = 1/3
\n" ); document.write( "* σ_x̄ = 0.3333\r
\n" ); document.write( "\n" ); document.write( "**Therefore, the standard deviation of the sample means is 0.3333.**
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