document.write( "Question 667618: A company produces steel rods. The lengths of the steel rods are normally distributed with a mean of 111.5-cm and a standard deviation of 2.4-cm.\r
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document.write( "Find the probability that the length of a randomly selected steel rod is between 105.3-cm and 115.6-cm. \r
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document.write( "P(105.3-cm < X < 115.6-cm) = \n" );
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Algebra.Com's Answer #415111 by stanbon(75887)![]() ![]() ![]() You can put this solution on YOUR website! A company produces steel rods. The lengths of the steel rods are normally distributed with a mean of 111.5-cm and a standard deviation of 2.4-cm. \n" ); document.write( "Find the probability that the length of a randomly selected steel rod is between 105.3-cm and 115.6-cm. \n" ); document.write( "P(105.3-cm < X < 115.6-cm) = \n" ); document.write( "------- \n" ); document.write( "z(105.3) = (105.3-111.5)/2.4 = -2.58333 \n" ); document.write( "z(115.6) = (115.6-111.5)/2.4 = 1.70833 \n" ); document.write( "---------------- \n" ); document.write( "P(105.3-cm < X < 115.6-cm) = = P(-2.58333 < z < 1.70833) = 0.9513 \n" ); document.write( "================== \n" ); document.write( "Cheers, \n" ); document.write( "Stan H. \n" ); document.write( "=================== \n" ); document.write( " \n" ); document.write( " |