Starting Salary
In testing the hypotheses 
two random samples from two populations of college of business graduates majoring in global marketing and international business produced the following statistics regarding their starting salaries (in $1000s): 
(Assume the salaries have normal distributions.)
-{Starting Salary Narrative} Estimate with 95% confidence the difference between the two population means.
Definitions:
Variance
A measure of the spread of a set of numbers, indicating how much the individual numbers differ from the mean.
Regression Analysis
A set of statistical processes for estimating the relationships among variables, focusing primarily on the dependence of a response variable on one or more explanatory variables.
Residuals
The differences between observed and predicted values in a statistical model, representing the unexplained part by the model.
Concerts Attended
Refers to the number of live music performances a person has gone to within a specified period.
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