A college wants to compare the annual salaries of graduates of the four different streams of its business diploma program, five years after graduation. The college randomly selects graduates from each of the streams (marketing, accounting, human resources, general business) and, with appropriate reassurances about maintaining confidentiality, collects the data. At the 2.5% level of significance, is there evidence of a difference in the salaries of graduates from the four different program streams? You should already have checked conditions in Develop Your Skills 11.1, Exercise 3.