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 9part 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)(10 points)

Kayla wants to find the width, ab, of a river. she walks along the edge of the river 65 ft and marks point c. then she walks 25 ft further and marks point d. she turns 90° and walks until her location, point a, and point c are collinear. she marks point e at this location, as shown. (a) can kayla conclude that δ and δ are similar? why or why not? (b) suppose de = 15 ft. what can kayla conclude about the width of the river?