QUESTION 2 Your gym has installed 4 of the latest exercise machine and everyone wants to use it. There is one queue for the new machines and clients arrive to the queue at the rate of 77 per hour. The coefficient of variation of the inter-arrival times is 2.7. If all of the machines are busy, clients use other pieces of equipment while waiting for one of the machines to become available. This new machine experience is intense – 2.78 minutes of explosive exercise intensity. The standard deviation of the usage times is only 0.5 minutes. On average, how many clients are waiting to use the new machines