Which interval accounts for the lowest percentage of response times?
The graph below displays a fire department's response
time, which measures the time from when the alarm is
sounded at the firehouse to the time the first fire engine
leaves the station.
BERE
Fire Department Response Times
O 20-30 seconds
O 30-40 seconds
70-80 seconds
080-90 seconds
0.4
0.3
Relative Frequency
0.2
0.1
10 20 30 40
50 60
70
80 90