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Two hospital emergency rooms use different procedures for triage of their patients. A local health care...

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Basic Math

Two hospital emergency rooms use different procedures for triageof their patients. A local health care provider conducted a studyto determine if there is a significant difference in the meanwaiting time of patients for both hospitals. The 40 randomlyselected subjects from Medina General Hospital (population 1)produce a mean waiting time of 18.3 minutes and a standarddeviation of 2.1 minutes. The 50 randomly selected patients fromSouthwest General Hospital (population 2) produce a mean waitingtime of 19.2 minutes and a standard deviation of 2.92 minutes.Using a significance level of ? = .02, the critical value(s) forrejecting the null hypothesis is(are) -2.33 ±1.988 +2.33 -2.37±2.33 +2.37 ±2.37 +1.988 -1.988

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