document.write( "Question 1067215: For a specific type of machine part being produced, the diameter is normally distributed, with a mean of 15.000 cm and a standard deviation of 0.030 cm. Machine parts with a diameter more than 2 standard deviations away from the mean are rejected.\r
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document.write( "If 15,000 machine parts are manufactured, how many of these will be rejected? \n" );
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Algebra.Com's Answer #682402 by stanbon(75887)![]() ![]() ![]() You can put this solution on YOUR website! For a specific type of machine part being produced, the diameter is normally distributed, with a mean of 15.000 cm and a standard deviation of 0.030 cm. Machine parts with a diameter more than 2 standard deviations away from the mean are rejected. \n" ); document.write( "If 15,000 machine parts are manufactured, how many of these will be rejected? \n" ); document.write( "---- \n" ); document.write( "Find the area under the normal curve that is greater \n" ); document.write( "than 2 standard deviations from the mean \n" ); document.write( "normalcdf(2,100) = 0.0228 \n" ); document.write( "Double that because there is area to the right and to the left. \n" ); document.write( "2*0.0228 = 0.0456 \n" ); document.write( "--- \n" ); document.write( "Ans: 0.0456*15000 = 683 when rounded up \n" ); document.write( "----------- \n" ); document.write( "Cheers, \n" ); document.write( "Stan H. \n" ); document.write( "----------- \n" ); document.write( " |