Consider a continuous review inventory system. Demand is normally distributed with an average of 64,000 per month and a monthly standard deviation of...

Consider a continuous review inventory system. Demand is normally distributed with an average of 64,000 per month and a monthly standard deviation of 8020 units. Lead time is two weeks (assume four weeks per month). If the firm desires only a 67% cycle service level, how many units of safety stock should be held?