On the set of all real numbers, let $\displaystyle P(x)$ mean “x is positive”.
$\displaystyle \neg \left( {\forall x} \right)\left[ {P(x)} \right]$ means “Some real number is not positive”. Literally, “It is false that all real numbers are positive”.
Whereas, $\displaystyle \left( {\forall x} \right)\left[ {\neg P(x)} \right]$ means “No real number is positive”. Literally, “All real numbers are not positive”.
Now can you answer the question?