document.write( "Question 1186968: The cars on the Kiddie-Coaster at StatPark seat eight children each, and the weights of the children who ride the Kiddie-Coaster are normally distributed with a mean of 105 pounds and a standard deviation of 23 pounds.\r
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document.write( "Assuming each carload is a random sample of eight children, find the total weight that separates the lightest 5% of the Kiddie-Coaster carloads from the rest.\r
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document.write( "Round your answer to the nearest tenth of a pound. \n" );
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Algebra.Com's Answer #820465 by Boreal(15235) You can put this solution on YOUR website! the average weight of the sample is 105 lb with a sd of 23/sqrt(8)=8.13 lb \n" ); document.write( "or \n" ); document.write( "the total weight distribution is 840 pounds with a sd of 23*sqrt*(8)=65.05 lb\r \n" ); document.write( "\n" ); document.write( "-1.645=(x-840)/65.05 \n" ); document.write( "-107.0 lb=x-840 \n" ); document.write( "x=733.0 pounds \n" ); document.write( " \n" ); document.write( " |