1. In a single-channel, single-phase queuing (waiting line) system, it is reasonable to assume Poisson arrivals with average arrival rate of 2 customers per hour. It is also reasonable to assume Negative Exponential service time with average service rate of 4 customers per hour. Based on these information, the average number of customers waiting in the queue is

   	a.	0.4
   	b.	0.5
   	c.	0.6
   	d.	Not enough information given to answer this question

2. In a single-channel, single-phase queuing (waiting line) system, it is reasonable to assume Poisson arrivals with average arrival rate of 2 customers per hour. It is also reasonable to assume Negative Exponential service time with average service rate of 4 customers per hour. Based on these information, the average time (in hours) a customer spends waiting in the queue is

   	a.	0.75
   	b.	0.50
   	c.	0.25
   	d.	Not enough information given to answer this question

3. Identify the correct statement(s):

   	a.	Simulation can be used to analyze large and complex real-world situations that cannot be solved by using conventional quantitative analysis models
   	b.	Simulation can answer what-if types of questions
   	c.	Simulation can be used to study the interactive effect of individual components or variables in order to determine which ones are important
   	d.	All of the above statements are correct