Use the following to answer the next 5 questions: a simple queueing system (one server) has a Poisson arrival distribution and exponential service distribution. Customers arrive to the queue at a rate of 6 per hour and the server takes an average of 4 minutes.

What is the probability there are exactly zero customers in the system? O 70% O 60% O 50% O 80% O 33% 10% 40% 25%