= Annual demand for a particular halogen bulb is D = 3,600 at a business that operates 300 days per year. The cost per order S = $25 and the holding cost per unit per year is $2. The stockout cost is $20 per unit. The lead time is 10 days, and demand during lead time follows the empirical distribution given in the following table. Number of Units Probability 30 .10 60 .10 90 .15 120 .30 150 .15 180 .10