document.write( "Question 1011542: If light bulbs have lives that are normally distributed with a mean of 2500 hours and a standard deviation of 500 hours, approximately what percentage of light bulbs has a life of more than 3000 hours?\r
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document.write( " A. About 84%
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document.write( " B. About 68%
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document.write( " C. About 32%
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document.write( " D. About 16% \n" );
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Algebra.Com's Answer #627222 by ikleyn(52781)![]() ![]() You can put this solution on YOUR website! . \n" ); document.write( "Stop flooding the forum!\r \n" ); document.write( " \n" ); document.write( "\n" ); document.write( " \n" ); document.write( " |