The brain volumes ​(cm3​) of 50 brains vary from a low of 908 cm3 to a high of 1478 cm3. Use the range rule of thumb to estimate the standard deviation s and compare the result to the exact standard deviation of ​174.7 cm3, assuming the estimate is accurate if it is within 15 .   The estimated standard deviation is nothing cm3. ​(Type an integer or a decimal. Do not​ round.) Compare the result to the exact standard deviation.     A. The approximation is not accurate because the error of the range rule of​ thumb's approximation is greater than 15 cm3.   B. The approximation is accurate because the error of the range rule of​ thumb's approximation is less than 15 cm3.   C. The approximation is not accurate because the error of the range rule of​ thumb's approximation is less than 15 cm3.   D. The approximation is accurate because the error of the range rule of​ thumb's approximation is greater than 15 cm3.

MATLAB: An Introduction with Applications
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ISBN:9781119256830
Author:Amos Gilat
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The brain volumes ​(cm3​) of 50 brains vary from a low of 908 cm3 to a high of 1478 cm3. Use the range rule of thumb to estimate the standard deviation s and compare the result to the exact standard deviation of ​174.7 cm3, assuming the estimate is accurate if it is within 15 .

 

The estimated standard deviation is
nothing
cm3.
​(Type an integer or a decimal. Do not​ round.)
Compare the result to the exact standard deviation.
 
 
A.
The approximation
is not
accurate because the error of the range rule of​ thumb's approximation is
greater
than 15
cm3.
 
B.
The approximation
is
accurate because the error of the range rule of​ thumb's approximation is
less
than 15
cm3.
 
C.
The approximation
is not
accurate because the error of the range rule of​ thumb's approximation is
less
than 15
cm3.
 
D.
The approximation
is
accurate because the error of the range rule of​ thumb's approximation is
greater
than 15
cm3.
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