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Thank you.
Homework Answers
Average demand, d = 76 units per day
Std dev of demand, s = 4 units per day
Order interval, P = 11 days
Lead time, L = 1 day
Desired service level = 90%
z value = NORMSINV(0.90) = 1.28
Order upto level, T = d*(L+P)+z*s*sqrt(L+P)
= 76*(1+11)+1.28*4*sqrt(1+11)
= 930 units
Order quantity for each cycle = Order upto level - On hand Inventory
| Cycle | Units |
| 1 | 930 - 41 = 889 |
| 2 | 930 - 9 = 921 |
| 3 | 930 - 106 = 824 |
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