SApCalcBr$16\mathrm{.}6\mathrm{.}012.$

According to the National Health Survey, the heights of adult males in the United States are normally distributed with mean $69\mathrm{.}0$ inches and standard deviation $2\mathrm{.}8$ inches.

$($a$)$ What is the probability that an adult male chosen at random is between $64$ and $74$ inches tall? $($Round your answer to three decimal places.$)$

$($b$)$ What percentage of the adult male population is more than $6$ feet tall? $($Round your answer to one decimal place.$)$