document.write( "Question 1179345: A manufacturer knows that their items have a normally distributed lifespan, with a mean of 8.9 years, and standard deviation of 1.5 years.\r
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Algebra.Com's Answer #808863 by ewatrrr(24785)\"\" \"About 
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document.write( "Hi\r\n" );
document.write( "Distribution: normal with µ = 8.9yr and σ = 1.5yr\r\n" );
document.write( "randomly purchase one item:\r\n" );
document.write( "Continuous Curve:\r\n" );
document.write( "Using TI or similarly an inexpensive calculator like an Casio fx-115 ES plus\r\n" );
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document.write( "P( x >  13) = normalcdf(13, 9999,8.9,1.5) = .0031 \r\n" );
document.write( "Or\r\n" );
document.write( "P( x >  13) = 1 - P( x ≤ 13) = 1 - 0.9969 = .0031\r\n" );
document.write( "Wish You the Best in your Studies.\r\n" );
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