Two hospital emergency rooms use different procedures for triage of their patients. a local health care provider conducted a study to determine if there is a significant difference in the mean waiting time of patients for both hospitals. the 40 randomly selected subjects from medina general hospital (population 1) produce a mean waiting time of 18.3 minutes and a standard deviation of 2.1 minutes. the 50 randomly selected patients from southwest general hospital (population 2) produce a mean waiting time of 19.2 minutes and a standard deviation of 2.92 minutes. using a significance level of α = .02, what practical conclusion should be drawn from this study?