document.write( "Question 47667: The average weight of a box at a store is 10lbs. with a standard deviation of 2 lbs. If 200 boxes are at the store approximately how many boxes will be between 10 and 13 lbs. \n" ); document.write( "

Algebra.Com's Answer #31506 by Nate(3500) $\"\"$ $\"About$

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sd = standard deviation
\n" ); document.write( "average(mean) = m
\n" ); document.write( "<--(2%)--(m - 2(sd))--(14%)--(m - sd)--(34%)--(m)--(34%)--(m + sd)--(14%)--(m + 2(sd))--(2%)-->
\n" ); document.write( "<--(2%)--(6)--(14%)--(8)--(34%)--(10)--(34%)--(12)--(14%)--(14)--(2%)-->
\n" ); document.write( "From 10 to 13 is 1.5 standard deviations: 34% + (1/2)14% = 34% + 7% = 41%
\n" ); document.write( "200 boxes * 41% = 82 boxes \n" ); document.write( "

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