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 following grouped frequency distribution. How many students had at least 50 social interactions for the week? Number of Social Interactions 20-24 Frequency The number of students was (Type a whole number.) 14 25-29 10 30-34 15 35-39 11 40-44 17 45-49 12 50-54 3 55-59 3 60-64 0 65-69 3