document.write( "Question 908395: The heights of 220 summer camp attendees are normally distributed with a mean of 62.4 inches and a standard deviation of 3.7 inches. About how many attendees could be expected to be shorter than inches?\r
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document.write( "A. 5
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document.write( "B. 35
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document.write( "C. 150
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document.write( "D. 215 \r
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document.write( "I'm thinking it's A but not sure. Could someone help? \n" );
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Algebra.Com's Answer #551002 by stanbon(75887)![]() ![]() ![]() You can put this solution on YOUR website! The heights of 220 summer camp attendees are normally distributed with a mean of 62.4 inches and a standard deviation of 3.7 inches. About how many attendees could be expected to be shorter than 55 inches? \n" ); document.write( "--------- \n" ); document.write( "z(55) = (55-62.4)/3.7 = -2 \n" ); document.write( "P(x < 55) = P(z < -2) = normalcdf(-100,-2) = 0.0228 \n" ); document.write( "Ans:: 0.0228*220 = 5 when rounded up \n" ); document.write( "-------------- \n" ); document.write( "Cheers, \n" ); document.write( "Stan H. \n" ); document.write( "============== \n" ); document.write( " A. 5 \n" ); document.write( " B. 35 \n" ); document.write( " C. 150 \n" ); document.write( " D. 215 \n" ); document.write( " \n" ); document.write( " |