Answer:
Number of bicyclists that traveled at leat 8.5 and less than 11.5 = 22
Explanations:
To get the number of bicyclists that traveled within this range, add all the frequencies between the range 8.5 and 11.5
Number of bicyclists that traveled between 8.5 and 9.5 = 4
Number of bicyclists that traveled between 9.5 and 10.5 = 5
Number of bicyclists that traveled between 10.5 and 11.5 = 13
Number of bicyclists that traveled at leat 8.5 and less than 11.5 = 4 + 5 + 13
Number of bicyclists that traveled at leat 8.5 and less than 11.5 = 22