30
 25
 20
 #patients
 15
 ...
 10
 5
 0
 19 minutes 10-19 minutes 20-29 minutes 30+ minutes
 The office aims to have patients wait less than twenty minutes. How many patients waited less than twenty minutes on
 10/30/12?
 O 7 patients
 O 16 patients
 31 patients
 38 patients