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,
0 10-20 cars
O 20-30 cars
O 30-40 cars
O 40-50 cars
Bridge Toll Booth Traffic
20
15
Frequency
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