Answer: 200
Explanation:
Based on the information given in the question, the appropriate re-order point for this part if we want a 95% service level will be:
Mean demand = 20
Standard deviation of demand = 4
Lead time = 9 days
Service level = 95% = 95/100 = 0.95
Re-order Point will be:
= (demand × lead time) + (z* × std dev × ✓leadtime)
= (20 × 9) + (1.645 × 4 × ✓9)
= (180) + (1.645 × 4 × 3)
= 199.74
= 200 approximately
The re-order point is 200