The following table shows the number of hours some high school students in two towns spend riding the bus each week:


Town A 5 3 9 4 20 9 5 7 6
Town B 8 8 3 5 5 6 3 9 9


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.