Suzy, a bartender, can serve drinks at the average rate of one every 35 sec. During a hot evening recently, the bar was particularly busy and every 45 sec someone was at the bar asking for a drink.
a.assuming that everyone in the bar drank at the same rate and that suzy served people on a first come, first served basis, how long would you expect to have to wait for a drink?
b. how many people would you expect to be waiting for drinks?
c. What is the probability that three or more people are waiting for drinks?
d.What is the utilization rate of the bartender?