document.write( "Question 1199277: Calculate the mean of a set of data with a standard deviation of 5.7, given that a value of 125.2 has a zscore of 2.3 \n" ); document.write( "
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standard deviation = 5.7
\n" ); document.write( "value of 125.2 has a z-score of 2.3
\n" ); document.write( "z-score formula is z = (x-m)/s
\n" ); document.write( "z is the z-score
\n" ); document.write( "x is the raw score
\n" ); document.write( "m is the mean
\n" ); document.write( "s is the standard deviation\r
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\n" ); document.write( "\n" ); document.write( "when z = 2.3 and s = 5.7 and x = 125.2, z-score formula becomes:
\n" ); document.write( "2.3 = (125.2 - m) / 5.7
\n" ); document.write( "multiply both sides of the equation by 5.7 to get:
\n" ); document.write( "2.3 * 5.7 = 125.2 - m
\n" ); document.write( "add m to both sides of the equatio0n and subtract 2.3 * 5.7 from both sides of the equation to get:
\n" ); document.write( "m = 125.2 - 2.3 * 5.7 = 112.09
\n" ); document.write( "that's your mean
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