The pounds of produce purchased at a grocery store on Friday between 1:00 p.m. and 6:00 p.m. is shown: 8, 14, 15, 20, 9, 7, 5, 10, 12, 16, 9, 11, 13, 8, 14, 7, 11, 18, 20, 24, 15, 10, 8, 5, 4, 6, 10, 7, 9, 11, 13, 12, 11, 14, 13, 10, 8, 17, 9, and 11. Which set of sample data is needed to best represent the population mean? the first five customers the first ten customers the first twenty customers the first twenty-five customers