The distribution of the annual incomes of a group of middle management employees approximated a normal distribution with a mean of $$37,200$ and a standard deviation of $$800.$

To determine one of the incomes that sandwich the middle $50\%$ of the group of middle management incomes, which Excel function would you use?

$=$standardize

$=$normdist

$=$ normsinv

$=$normsdist

$=$ norminv