Two independent random samples of annual starting salaries for individuals with master's and bachelor's degrees in business were taken and the results are shown below 
a.What are the degrees of freedom for the t distribution?
b.Provide a 95% confidence interval estimate for the difference between the salaries of the two groups.
Definitions:
Discharged from Hospital
The process of formally releasing a patient from a hospital after treatment, indicating they no longer need inpatient care.
Mental Status
A comprehensive assessment of a person's cognitive function, including awareness, thought processes, memory, and perception.
Interview
A formal, structured conversation where questions are asked to gather information from the interviewee.
Lethargic
Describing a state of sluggishness, drowsiness, or little to no energy, often as a symptom of a medical condition or result of lack of sleep.
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