4 . The telephone arrival data presented are for the 10:09 AM . to 11:00 A M . time period ; however , the arrival rate of incoming calls is expected to change from hour to hour . Describe how your waiting line analysis could be used to develop a ticket agent staffing plan that would enable the company to provide different levels of staffing for the ticket reservation system at different times during the day . Indicate the information that you would need to develop this staffing plan