Huang’s television-repair service receives an average of four TV sets per 8-hour day to be repaired. The service manager would like to be able to tell customers that they can expect their TV back in 3 days. They cannot accommodate more than 10 TV sets at a time (under repair and waiting for service). What is the service rate (hint: W = 3 days)? What is the probability that the number of TV sets on hand will exceed the shop capacity of 10 computers?