document.write( "Question 1041689: In a recent survey 45% of students at a school said they love Italian ice. If the margin of error was 4.3%, then roughly how many students were surveyed?\r
\n" ); document.write( "\n" ); document.write( "A.) 973 students
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\n" ); document.write( "C.) 133 students
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Algebra.Com's Answer #656771 by Edwin McCravy(20060)\"\" \"About 
You can put this solution on YOUR website!
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document.write( "The formula for the sample size is \r\n" );
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document.write( "\"n\"\"%22%22=%22%22\"(1-)(za/2/E)2\r\n" );
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document.write( "According to the empirical rule, approximately 95% of the data is within\r\n" );
document.write( "2 standard deviations from the mean, so we will use za/2 = 2 \r\n" );
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document.write( "\"n\"\"%22%22=%22%22\"\"0.45%281-0.45%29%282%2F0.043%29%5E2\"\"%22%22=%22%22\"\"535.4245538\"\r\n" );
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document.write( "Edwin
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