question 28

The brain volumes (cm ) of 50 brains vary from a low of 910 cm to a high of 1496 cm. Use the range rule of thumb to estimate the standard deviation s and compare the result to the exact standard deviation of 181.5 cm", assuming the estimate is accurate if it is within 15 cm". The estimated standard deviation is cm (Type an integer or a decimal. Do not round.) Compare the result to the exact standard deviation. O A. The approximation is not accurate because the error of the range rule of thumb's approximation is less than 15 cm. O B. The approximation is accurate because the error of the range rule of thumb's approximation is less than 15 cm. O C. The approximation is not accurate because the error of the range rule of thumb's approximation is greater than 15 cm. O D. The approximation is accurate because the error of the range rule of thumb's approximation is greater than 15 cm