Given the following information:

Expected demand during a lead time $=340$ units

Standard deviation of demand during a lead time $=45$ units

Demand during a lead time is distributed Normally:

Refer: z$-$values.

a$.$ Determine the safety stock needed to attain a $5$ percent risk of stockout during a lead time. $($Round the final answer to the nearest whole number.$)$

Safety stock units

b$.$ Would a stockout risk of $10$ percent require more or less safety stock?

$10\%$ stock out risk $->$ z $->$ SS