Salary of Business Graduates Narrative

Essay

Salary of Business Graduates Narrative
An economist wants to test whether the mean starting salary (in $1000s) of business graduates is the same for three different majors and three types of class standing (top third, middle third, lowest third). No interaction is assumed. Appropriate sampling reveals the data shown below.
Starting Salaries (thousands of dollars per year)
-Refer to Salary of Business Graduates Narrative. Do the data present sufficient evidence to indicate differences among the block means? Why or why not? (Test using α = 0.05.)