Question: The waiting time (in minutes) for emergency room patients with non-life-threatening injuries was measured at four hospitals for all patients who arrived between 6:00 and 6:30 PM on a certain Wednesday. The results are shown below. Research question: Are the mean waiting times the same for emergency patients in these four hospitals? ERWait

Emergency Room Waiting Time (minutes)

Hospital A Hospital B Hospital C Hospital D

(5 patients) (4 patients) (7 patients) (6 patients)