Question 47667
sd = standard deviation
average(mean) = m
<--(2%)--(m - 2(sd))--(14%)--(m - sd)--(34%)--(m)--(34%)--(m + sd)--(14%)--(m + 2(sd))--(2%)-->
<--(2%)--(6)--(14%)--(8)--(34%)--(10)--(34%)--(12)--(14%)--(14)--(2%)-->
From 10 to 13 is 1.5 standard deviations: 34% + (1/2)14% = 34% + 7% = 41%
200 boxes * 41% = 82 boxes