For her Bakery, Zainab wants to develop an inventory ordering policy for her best

$-$

selling croissants with a

$9$

$0$

$\%$

$$probability of not stocking out. To illustrate the

recommended procedure, consider the ordering policy for croissants. The annual

demand for croissants is

$8$

$,$

$0$

$0$

$0$

$$units$.$ The bakery operates

$3$

$0$

$0$

$$days a year. Every

week

$($

$7$

$$days

$)$

$,$

$$inventory is counted, and a new order is placed. It takes

$5$

$$days for

the croissants to be delivered. The standard deviation of daily demand for

croissants is

$3$

$$units$.$ Currently, there are

$2$

$0$

$0$

$$croissants in inventory. Use a z

$-$

value

of

$1$

$.$

$6$

$4$

$5$

$$for this calculation. How many croissants should Zainab order?

USING FIXED TIME PERIOD MODEL FORMULA