6. A "trouble line" is set up by a software company to allow customers to phone a consultant about difficulties that are encountered with the software. A consultant's service times are exponentially distributed with a mean time of 4 minutes. On average, the average interarrival time between customers phoning into the "trouble line" is 6 minutes. a. What percent of the time are the customers not able to connect with a consultant if there are two consultants and if there is no queue for customers to wait in? of automobiles in the h in the previous seed Invited of just one b. What percent of the time are the customers able to wait in a queue if there are two consultants and if there is a queue for customers to wait in