The annual demand for a product is

$15$

$,$

$600$

$$units$.$ The weekly demand is

$300$

$$units with a standard deviation of

$90$

$$units$.$ The cost to place an order is $

$31\mathrm{.}20$

$,$

$$and the time from ordering to receipt is four weeks. The annual inventory carrying cost is $

$0\mathrm{.}10$

$$per unit. How much to order? Find the optimal ordering quantity. When to order? Find the reorder point necessary to provide a

$96$

$\%$

$$service level. Compose a sentence of inventory policy.