Jawab:

(a) If the lead time is reduced to 0, the amount of safety stock would be reduced because there is no longer a need to account for the time it takes to receive a new shipment.

(b) If the service level (measure 1) is decreased, the amount of safety stock would be increased because a lower service level means a higher risk of stockouts, and therefore, a greater need for safety stock.

(c) If the unit shortage cost is doubled, the amount of safety stock would be increased because a higher cost of stockouts means that there is a greater need to avoid them, and therefore, a greater need for safety stock.

(d) If the mean of the probability distribution of demand during the lead time is increased, the amount of safety stock would be increased because a higher mean demand means a higher likelihood of stockouts, and therefore, a greater need for safety stock.

(e) If (ba) is doubled, the amount of safety stock would be increased because a wider range of possible demand means a higher risk of stockouts, and therefore, a greater need for safety stock.

(f) If σ is doubled, the amount of safety stock would be increased because a larger standard deviation means a higher risk of stockouts, and therefore, a greater need for safety stock.

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