document.write( "Question 1141745: What percentage of scores fall between -1 and +1 standard deviation units on a normal curve? How do you know this? \n" ); document.write( "
Algebra.Com's Answer #762448 by Edwin McCravy(20064)\"\" \"About 
You can put this solution on YOUR website!
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document.write( "On your TI 83 or 84, \r\n" );
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document.write( "press 2ND \r\n" );
document.write( "press VARS \r\n" );
document.write( "highlight 2:normalcdf\r\n" );
document.write( "press ENTER        \r\n" );
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document.write( "if you have a newer model 84 calculator, make it read this way\r\n" );
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document.write( "         lower:-1 \r\n" );
document.write( "         upper: 1 \r\n" );
document.write( "         m:0 \r\n" );
document.write( "                  s:1\r\n" );
document.write( "         Paste \r\n" );
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document.write( "Press ENTER\r\n" );
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document.write( "You'll read\r\n" );
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document.write( "normalcdf(-1,1,0,1)  \r\n" );
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document.write( "press ENTER, read 0.6826894809\r\n" );
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document.write( "If you have an older model 84 or an 83, make it read \r\n" );
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document.write( "normalcdf(-1,1,0,1) \r\n" );
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document.write( "press ENTER, read 0.6826894809\r\n" );
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document.write( "Edwin
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