document.write( "Question 1138480: If a fair coin is tossed 100 times, we would expect heads to occur about 50 times. But how many heads would suggest that a coin is not fair? An inequality
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\n" ); document.write( "|(x - 50)/5| < 1.96,\r
\n" ); document.write( "\n" ); document.write( "where x is the actual number of heads that occurred in 100 tosses of a coin. What range of heads would suggest that the coin is a fair coin?
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Algebra.Com's Answer #756342 by Edwin McCravy(20060)\"\" \"About 
You can put this solution on YOUR website!
\"abs%28%28x+-+50%29%2F5%29+%3C+1.96\"\r\n" );
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document.write( "Rewrite without absolute values as a three-sided inequality:\r\n" );
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document.write( "\"-1.96%3C%28x-50%29%2F5%3C1.96\"\r\n" );
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document.write( "Multiply all three sides by 5:\r\n" );
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document.write( "\"-9.8%3Cx-50%3C9.8\"\r\n" );
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document.write( "Add 50 to all three sides:\r\n" );
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document.write( "\"40.2%3Cx%3C59.8\"\r\n" );
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document.write( "Since x can only be a whole number, round the\r\n" );
document.write( "lower number up and the higher number down.\r\n" );
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document.write( "\"41%3C=x%3C=59\"\r\n" );
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document.write( "It would be considered a fair coin if you got between 41 and 59 heads,\r\n" );
document.write( "inclusive.\r\n" );
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document.write( "It would be considered an unfair coin if you got 40 or fewer heads or 60 or more\r\n" );
document.write( "heads.\r\n" );
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document.write( "Edwin
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