3. The Course Manager wants to use a new tutorial to teach the students about business ethics ...

     3. The   Course Manager wants to use a new tutorial to teach the students about   business ethics.  As an experiment she randomly selected 15 students and   randomly assigned them to one of three groups which include either a   PowerPoint presentation created by the faculty, AuthorGen Presentation   created by the faculty, or a well known tutorial by the ABC company.    After completing their assigned tutorial, the students are given a Business   Ethics test.  At the .01 significance level, can she conclude that there   is a difference between how well the different tutorials work for the   students?