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Section 3.2 Homework Question 2
Section 3.2 Homework
2. The brain volumes (cm3) of 50 brains vary from a low of 904 cm3 to a high of 1490
cm3. Use the range rule of thumb to estimate the standard deviation s and compare the result to the exact standard deviation of 73.1 cm3, assuming the estimate is accurate if it is within 15 cm3.
The estimated standard deviation is _____cm3
Compare the result to the exact standard deviation.
- The approximation is accurate because the error of the range rule of thumb’s approximation isless than 15 cm3.
- The approximation is accurate because the error of the range rule of thumb’s approximation isgreater than 15 cm3.
- The approximation is not accurate because the error of the range rule of thumb’s approximation isgreater than 15 cm3.
- The approximation is not accurate because the error of the range rule of thumb’s approximation is less than 15 cm3.