document.write( "Question 189965: Samples of wires coming off the production line were tested for tensile strength. the statistical results ( in PSI) were:
\n" ); document.write( "Arithmetic mean = 500; Mode=500; Quartile deviation=25; Range=240; Median=500; Standard deviation=40; Mean deviation=32; Number in sample=100.
\n" ); document.write( "According to the empirical Rule, The middle 95% of the wires tested between approximately what two values?
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Algebra.Com's Answer #142531 by stanbon(75887)\"\" \"About 
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Samples of wires coming off the production line were tested for tensile strength. the statistical results ( in PSI) were:
\n" ); document.write( "Arithmetic mean = 500; Mode=500; Quartile deviation=25; Range=240; Median=500; Standard deviation=40; Mean deviation=32; Number in sample=100.
\n" ); document.write( "According to the empirical Rule, The middle 95% of the wires tested between approximately what two values?
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\n" ); document.write( "95% of the measurements are within 2 standard deviations of the mean.
\n" ); document.write( "mean-2(stand dev) = 500-2(40) = 420
\n" ); document.write( "mean+2(stand dev) = 500+2(40) = 580
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\n" ); document.write( "Ans: between 420 and 580
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\n" ); document.write( "Cheers,
\n" ); document.write( "Stan H. \n" ); document.write( "
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