Which interval contains the median number of cars in line?
Drivers pay a toll to pass over a busy bridge, and
there are many toll booths that collect money. The city
manager counted the total number of cars waiting to
pay their tolls at 15-minute intervals during the day for
a total of 50 observations. The histogram below shows
the results.
10-20 cars
20-30 cars
30-40 cars
40-50 cars
Bridge Toll Booth Traffic
20
15
Frequency
10