A) What is the probability that 12 or more cars will arrive during any given hour of operation?
B) What is the probability that 5 or fewer cars will arrive during any given 20 min. of operation?
C) What is the probability that more than 5 but less than 10 cars will arrive during any given 40 min. of operation?
D) What is the probability that no arrivals happen in any given 10 min. of operation?