The dot plots below show the distances traveled by two groups of bikers: two dot plots are labeled group a and group b. the horizontal axis is labeled distance traveled and marked from 15 to 40 at increments of 5 for both dot plots. group a shows 9 dots on 15, 8 dots on 20, 3 dots on 25, 6 dots on 30, 4 dots on 35. group b shows 10 dots on 20, 6 dots on 25, 4 dots on 30, 9 dots on 35 and 6 dots on 40. which of the following inferences can be made using the dot plots?