Of all the actors we mentioned in regard to the fight for abolition, which of the following faced double-discrimination?

Manifest Destiny played an important role in the history of the United States. Which of the following historical events were ushered in by the political forces associated with Manifest Destiny?

Which of the following is true of the Coercive Acts?

It has been said that there were some 10,000 battles during the Civil War. Of these battles, where did fighting begin?

Several factors played a role in the colonists winning independence from the British.Which of the following factors directly led to the creation of the Declaration of Independence?

In a queueing system, an increase of the standard deviation of the inter-arrival time will increase the average waiting time in queue.

d) On average, how many toilets are empty during the event?  

c) On average, how long is the queue (i.e., number of customers waiting in line)?  

All else equal, which of the following will NOT reduce the average waiting time in a queueing system?

FestEvents is a concert organizer that is evaluating the installation of portable toilets at an outdoor venue where a concert is going to take place. In particular, it is considering an area of the venue that is far away from the existing restrooms. Assume there will be one single queue to access all the portable toilets in this area and that only one person uses a toilet at a time.   FestEvents estimates that there will be 4 arrivals per minute on average to the toilets, with a standard deviation of the time between arrivals of 15 seconds. The average time a person spends using the toilet is 3.12 minutes with a standard deviation of 2 minutes. Suppose FestEvents installs 20 portable toilets.   a) On average, what fraction of the toilets will be occupied during the event?