CPU-on-Demand (CPUD) offers real-time high-performance computing services. CPUD owns 1 supercomputer that can be accessed through the Internet. Their customers send jobs that arrive, on average, every 5 hours. The standard deviation of the interarrival times is 3 hours.
Executing each job takes, on average, 4 hours on the supercomputer. what is the utilization of CPUD's supercomputer?