6. Again, picture a large factory with a lot of different pieces of equipment. Many times, when a piece of equipment fails or jams, the operator can quickly fix it. But, there are many cases when the operator needs to call one of the technicians to fix the problem. There are currently 2 technicians on staff for each shift. When they are called, it takes them 48 minutes, on average, to fix the machine with an SCV of 1. The plant averages about 2 calls per hour for the technicians support. The SCV of the calls is also estimated a 1. How much extra downtime is incurred at a machine just waiting for a technician to be free? How many machines, on average, are broken down at any given time? How much would these parameters be improved by doubling the number of technicians to 4?