An auto shop performs a monthly inventory count for auto parts it carries. Assume 30 days per month. Determine the number of auto parts that should be ordered using the following information: (10 points)
Average daily demand: 20 units
Standard deviation of demand: 25 units/month
Desired service probability: 98%
Current inventory: 30 units
Lead time: 15 days
Order Size = Mean demand over lead time + safety stock - inventory on hand
Mean demand over lead time = ...