Multiple-Answer question. Select each (and every) correct response (there may be more than one).

In the context of waiting lines, which of the following statement(s) correctly applies (apply) to the Pooling Principle?

Multiple-Answer question. Select each (and every) correct response (there may be more than one).

In the context of waiting lines, which of the following statement(s) correctly applies (apply) to the Pooling Principle?

1. The variance of the service process decreases when servers are pooled.

2. Economies of scale can arise when identical servers are grouped or pooled together to process work from a common queue.

3. If two identical servers (and their queues) are pooled, the average customer waiting time for the pooled system can decrease.

4. The Pooling Principle takes into account learning-curve effects that might increase the efficiency of servers specializing on a certain group of customers.