YSU store sells university coffee mugs. Daily demand is $28$ mugs with a standard deviation of $4$ mugs per day. Each mug costs $$7\mathrm{.}85.$ Ordering costs are $$14.$ The carrying costs are $$1$ per year. The store is open $250$ days per year. Lead time is $4$ days with a standard deviation of $1\mathrm{.}6$ days. Desired service level is $98\%.$

use the z$-$table.pdf to find the corresponding z$-$value.

Calculate the EOQ