Annual demand for an item is 13,000 units with the cost per unit at $243. The holding rate is 10% and the order cost is $12.00 per order. The standard deviation of daily demand is 3 units. Assume 260 days in the year and a lead-time of 2 days. If a service level of 97% is desired during the reorder interval, what is the safety stock required?

Safety stock required = 8

Explanation:

The explanation for this question is given in the attachment below.

ans.

heterothermic organisms include those organisms that can switch between homeothermic (having body temperature higher than environment) and poikilothermic (having variation in internal body temperature) strategies.

some migratory birds show heterothermy as they decrease their metabolic rate during cold nights to keep their body temperature low. drop in metabolic rate allows increase in production efficiency of birds that reduces the internal body temperature to make it equal to external cold temperature during cold nights.

thus, the correct answer is 'birds allow their temperature drop in order to increase their production efficiency.'