The DFW International Airport currently operates with one runway. Airplanes arrive at a rate of 19 per hour and the average landing time is 2.5 minutes. The estimated average fuel consumption for an aircraft stacking in the air is 20 liters per minute, and a liter of fuel costs $11. What is the average cost of fuel burned by an aircraft waiting to land?

An oil exploration company currently has two active projects, one in asia and the other in europe. let a be the event that the asian project is successful and b be the event that the european project is successful. suppose that a and b are independent events with p(a) = 0.2 and p(b) = 0.8. (a) if the asian project is not successful, what is the probability that the european project is also not successful? (b) what is the probability that at least one of the two projects will be successful? (c) given that at least one of the two projects is successful, what is the probability that only the asian project is successful? (round your answer to three decimal places.)