Expected demand during lead time $=355$ units

Standard deviation of lead time demand $=48$ units

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

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

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$$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.$)$

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$$c$$The safety stock needed to attain a $3$ percent risk of stockout during lead time.$($Do not round intermediate calculations. Round your answer to the nearest whole number.$)$