5. The information below is the number of daily emergency service calls made by the volun- teer ambulance service of Walterboro, South Carolina, for the last 50 days. To explain, there were 22 days on which there were two emergency calls, and 9 days on which there were three emergency calls. Number of Calls 0 1 2 3 4 Frequency 8 10 22 9 1 Total 50