Use the normal distribution to the right to answer the questions.

$($a$)$ What percent of the scores are less than $19?$

$($b$)$ Out of $1500$ randomly selected scores, about how many would be expected to be greater than $21?$

Standardized Test Composite Scores$1921$Score$=19\mathrm{.}5=5\mathrm{.}2$x A graph titled "Standardized Test Composite Scores" has a horizontal x$-$axis labeled "Score" from about $1$ to $38$ with tick marks at $19$ and $21.$ A normal curve$=19\mathrm{.}5=5\mathrm{.}2$ is centered above the x$-$axis at $19\mathrm{.}5.$ A vertical line segment labeled extends from the normal curve to the x$-$axis at $19\mathrm{.}5.$

$($a$)$ The percent of scores that are less than $19$ is enter your response here$\%.($Round to two decimal places as needed$)$

$($b$)$ About enter your response here scores would be expected to be greater than $21.$