how many students studied less than 4 hours per week? approximately the mode for time spent studying per week using mid value of each class?

Question 3 The following graph shows the distribution of self-reported time spent studying per week for 56 students. (This graph uses a right-hand rule: If someone studied for exactly 4 hours, then they would be in the second class, the class to the right of 4.) 12 10 8 Frequency 6 2 1 2 3 4 5 6 7 8 hours