#### Answer

Divide the data into 6 intervals. The minimum waiting time is 5 and the maximum waiting time is 60:
The time 1-10 occurs 5 times
The time 11-20 occurs 3 times
The time 21-30 occurs 2 times.
The time 31-40 occurs 2 time
The time 41-50 occurs 1 time.
The time 51-60 occurs 1 time

#### Work Step by Step

To make a histogram draw a bar to represent each interval frequency: