Let $\bar { X }$ be the sample mean obtained by randomly extracting a sample of size $n$ from a population with population standard deviation 14. When $\sigma ( \bar { X } ) = 2$, what is the value of $n$? [3 points]\\
(1) 9\\
(2) 16\\
(3) 25\\
(4) 36\\
(5) 49