The following table shows the number of hours some students in two universities spend reading each week: school a 7 2 3 10 17 14 10 22 2 school b 9 10 16 18 20 15 17 18 14 part a: create a five-number summary and calculate the interquartile range for the two sets of data. (6 points) part b: are the box plots symmetric? justify your answer. (4 points)