2 (5 points). You run a small company that depends on internet sales. You have 3 computer servers to manage the internet activity. These servers are very important. Each one breaks down about once every 3 weeks with an exponentially distributed inter-breakdown time. About 80% of the time you can x the problem quickly with an average repair time of 1/2 hour. The remaining 20% of the time, the repair is more difcult and the average repair time is 6 hours. Both repair times are exponentially distributed. (a) Set up the rate diagram for this queue. (b) Give the balance equations. (c) Find the fraction of time all servers are working. ) ((1 Find the average time that an out-oforder server has to be taken off line before being worked on