Question 4. Huduko Inc. offers a number of computer services. One server handles its own web page. It receives requests for web pages at the rate of 90 per second. The standard deviation of these interarrival times is 0.02 second. What is the coefficient of variation of the interarrival times for this server? Question 5. CPU-on-Demand (CPUD) offers real-time high-performance computing services. CPUD owns one supercomputer that can be accessed through the Internet. Its customers send jobs that arrive, on average, every 5 hours. The standard deviation of the interarrival times is 5 hours. Executing each job takes, on average, 3 hours on the supercomputer and the standard deviation of the processing time is 4.5 hours. What is the utilization (as a percentage) of CPUD's supercomputer? Question 6. Camile owns Crunch Code, a company that provides quick programming solutions. Clients send Crunch projects via its web page and Crunch bangs out the needed code as quickly as possible. Camile has five programmers who do all of the coding. On average, a project arrives once every 4.8 hours. Each project is assigned to one programmer and that programmer takes, on average, 19.2 hours to complete each project. Camile wants to know what fraction of the time (as a percentage) each of her programmers is busy coding? (2) Question 7. In the previous question, a project arrives at Crunch once every 4.8 hours, with a standard deviation of 6.00 hours. Again, each project is assigned to one programmer and that programmer takes, on average, 19.2 hours to complete each project, with a standard deviation of 19.2 hours. How many uncompleted projects does Crunch Code have, on average, at any given time? Include projects waiting for a programmer as well as those being programmed. Choose the nearest integer. (2)