8, 7, 6, 9, 8.5, 7.5, 10, 5.5, 7, 9, 8.5, 7, 9.5, 8, 8.5 Mrs. Bergstedt listed the shoe sizes of all of her students. What is the MEAN shoe size of her students? A) 4.5 B) 5.5 C) 7 D) 7.93