Two Hospital Emergency Rooms Use Different Procedures for Triage of Their

question 18

Essay

Two hospital emergency rooms use different procedures for triage of their patients.We want to test the claim that the mean waiting time of patients is the same for both hospitals.The 40 randomly selected subjects from one hospital produce a mean of 18.3 minutes.The 50 randomly selected patients from the other hospital produce a mean of 25.31 minutes.Assume s_a = 2.1 minutes and s_b = 2.92 minutes.Calculate the test statistic for testing the hypothesis that there is a difference in the mean waiting time between the two hospitals.Assume unequal variances.

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Definitions:

Sternum

A flat bone located in the center of the chest, connected to the ribs via cartilage, forming a major part of the rib cage and protecting vital organs in the thorax.

Mandibular Fossa

A depression in the temporal bone that forms the socket for the condylar process of the mandible, contributing to the temporomandibular joint.

Temporal

Related to time or also pertaining to the temples of the head near the temporal bones of the skull.

Sphenoid

A butterfly-shaped bone at the base of the skull, behind the eyes, touching on various important structures and enclosing the pituitary gland.