A company opened this past year. They have a 24 hour customer service department. The company is looking to reduce costs and is considering closing its customer service department between the hours of midnight at 5am. Before making this decision, they want to gather some information about the usage of this service during these hours. They pull the data from the number of calls to customer service for each day since the company began. Number of Calls to Cust Service Number of Days 0-14 32 15-29 64 30-44 58 45-59 46 60-74 68 75-89 32 What is the mean number of calls to customer service