Google it: According to a recent report, $67\%$ of Internet searches in a particular month used the Google search engine. Assume that a sample of $24$ searches is studied. Round the answers to at least four decimal places.

Part $1$ of $4$

What is the probability that exactly $19$ of them used Google? The probability that exactly $19$ of them used Google is $\_\_\_\_\_$

Part $2$ of $4$

What is the probability that $14$ or fewer used Google?The probability that $14$ or fewer used Google is $\_\_\_\_\_\_\_$

Part $3$ of $4$

What is the probability that more than $19$ of them used Google? $\_\_\_\_\_\_$

Part $4$ of $4$

Woukd it be unusual if fewer than $12$ used Google?

It $($would or wouldn't$)$ be unusual if fewer than $12$ used Google since the probability is $\_\_\_\_\_\_$