Given this information:

Expected demand during lead time $=310$ units

Standard deviation of lead time demand $=10$ units

Use Table.

Determine each of the following, assuming that lead time demand is'distributed normally:

a$.$ The ROP that will provide a risk of stockout of $1$ percent during lead time. $($Round your answer to the nearest whole number.$)$

ROP

units

b$.$ The safety stock needed to attain a $1$ percent risk of stockout during lead time. $($Do not round intermediate calculations. Round your answer to the nearest whole number.$)$

Safety stock

units