A professor had students keep track of their social interactions for a week. The number of social interactions over the week is shown in the grouped frequency distribution table to the right. How many students were involved in this study? Number of Social Interactions 30-39 40-49 50-59 60-69 70-79 80 89 90-99 100-109 110-119 120-129 Frequency 6 20 20 13 20 11 The number of students was (Type a whole number) 3 1 1 TERBEEK