A medical researcher was studying stress. The researcher collected the number of recent stressful life events from a randomly selected group of cardiac patients and another group of orthopedic patients from the same hospital. Since research has shown that stressful life events (marriage, new job, death of spouse, etc.) are associated with illness, the researcher proposed the following study question: Do cardiac patients experience more stressful life events than orthopedic patients? In this study the researcher used an instrument which measured stress from 0 to 100 points.

state the correct statistical test which should be used for the scenario