The brain volumes
(cm^(3))
of 50 brains vary from a low of
906cm^(3)
to a high of
1496cm^(3)
. Use the range rule of thumb to estimate the standard deviation s and compare the result to the exact standard deviation of
171cm^(3)
, assuming the estimate is accurate if it is within
15cm^(3)
. The estimated standard deviation is
◻
cm^(3)
. (Type an integer or a decimal. Do not round.)