2. Consider the concierge service at a large resort. The concierge helps guests with various tasks, including reservations at local restaurants or offering advice on various local activities. On average, 15 guests arrive at the concierge desk per hour with a coefficient of variability of 0.5. The hotel has only one concierge on service. It takes the concierge, on average, 3 minutesto help the guest with their questions. The standard deviation of this time is 3 minutes. a. What is the average time a guest has to wait before talking to the concierge? b. How many guests will, on average, be at the concierge's desk (either talking to the concierge or waiting in line)? (Your answer does NOT have to be an integer) c. If the hotel decides to add a 2nd concierge, what will be the impact?With two concierges at the desk