Hypothesis Testing on Multiple Populations 3. The ABC Tutoring Director wants to use ...

        Hypothesis Testing on Multiple Populations    3. The ABC   Tutoring Director wants to use a new tutorial to teach middle school students   about basic algebraic techniques. As an experiment she randomly selected 18   students and randomly assigned them to one of three groups which include   either a PowerPoint presentation created by the classroom teachers, WebEx   Presentation created by an outside contractor, or a well known tutorial by   the EducTrain company. After completing their assigned tutorial, the students   are given a basic algebraic methods quiz. At the .01 significance level, can   she conclude that there is a difference between how well the different   tutorials work for the middle school students?   Students   Grades on the Algebraic Methods Quiz following the Tutorial   Power Point Tutorial WebEx Tutorial EducTrain Tutorial    88 79 96    94 86 78    91 75 89    88 83 96    98 74 97    84 72     90