document.write( "Question 1053512: Find the margin of error.\r
\n" ); document.write( "\n" ); document.write( "95% confidence interval; n = 91 ; = 55, s = 5.4\r
\n" ); document.write( "\n" ); document.write( "How do I solve this with a calculator? \n" ); document.write( "

Algebra.Com's Answer #668740 by ewatrrr(24785) $\"\"$ $\"About$

You can put this solution on YOUR website!
Need to know re Margin of Error:
\n" ); document.write( "ME =ą $\"+z%2Asigma%2Fsqrt%28n%29\"$
\n" ); document.write( "0r
\n" ); document.write( "ME =ą $\"z%2Asqrt%28%28p%281-p%29%29%2Fn%29\"$
\n" ); document.write( "|In this ex, with info given\r
\n" ); document.write( "\n" ); document.write( "95% confidence interval
\n" ); document.write( "ME =ą $\"+z%2Asigma%2Fsqrt%28n%29\"$
\n" ); document.write( "z = invNorm( 95 +.05/2) 0r z =invNorm(.05/2)
\n" ); document.write( "z = ą 1.96
\n" ); document.write( "ME = ą $\"+1.96%2A5.4%2Fsqrt%2891%29\"$ ***
\n" ); document.write( "95% confidence interval
\n" ); document.write( "55 ą ME\r
\n" ); document.write( "\n" ); document.write( " \n" ); document.write( "

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