The COM 341 Medical Supplies is in charge of maintaining hospital supplies at UVic Hospital. The lead time for replenishment deliveries is 6 days. It was calculated that the mean demand for a 3-day period was 60 units, with a standard deviation of 7 units. Please assume that demand follows a normal distribution. COM 341 Medical Supplies would like to maintain a 90% service level. Required:
What is the appropriate reorder point?

reorder point = 132.67 ≈ 133 units

Explanation:

z score for service level 90% = 1.28

lead time = 6 days

mean demand 60 units for 3 days period, 20 per day

standard deviation of demand = 7 units

reorder point = (20 x 6) + {1.28 + √[(7x7)/3] x √6} = 120 + 12.67 = 132.67 ≈ 133 units

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