Sherry Clower is trying to figure out how many custom books to order for her class of $25$ students. In the past, the number of students buying books has shown the following demand pattern:

NUMBER OF STUDENTS WHO BOUGHT A BOOK PERCENTAGE OF OBSERVATIONS

$16$ or fewer $0\%$

$174\%$

$1815\%$

$1917\%$

$2018\%$

$2126\%$

$2210\%$

$236\%$

$244\%$

$250\%$

$(**)$ Suppose each custom book costs Sherry $$12$ to print, and she sells the books to the students for $$50$ each. Excess books must be scrapped. What is the target service level? What is the target stocking point?

$(**)$ Suppose printing costs increase to $$22.$ Recalculate the new target service level and target stocking point. What happens?