computer system allows three users to access the central computer simultaneously. Agents who attempt to use the system when it is full are denied access; no waiting is allowed. 30 calls per hour. The service rate per line is 19 calls per hour. (a) What is the probability that 0,1,2, and 3 access lines will be in use? (Round your answers to four decimal places.) P(0)=P(1)=P(2)=P(3)= (b) What is the probability that an agent will be denied access to the system? (Round your answers to four decimal places.) Pk= (c) What is the average number of access lines in use? (Round your answers to two decimal places.) system have