Answer:

Therefore
X is not Accurate as it Falls outside of the Volume 15cm^3
Explanation:
From the question we are told that:
Sample size

Volume Range

Exact standard deviation

Generally the equation for range rule of thumb is mathematically given by
Where


Therefore
Estimate Standard deviation


Since
Exact standard deviation is 186.4 cm^3
Comparing



Therefore
X is not Accurate as is Falls outside of the Hallmark 15cm^3