In a queuing system, if the mean time between arrivals is 10 minutes, what is the arrival rate? 06 per minute 10 per minute O 0.1 per hour 06 per hour 10 per hour Most inventory systems are so large that it is not practical to model and give a thorough treatment to each item. In these cases, it is useful to categorize items according to their year dollar value. This techniques is known as: O fixed-time period classification cycle counting classification O fixed-order quantity classification Little's classification ABC inventory classification