The ANOCA table below presents group means for 4 separate groups with respect to the perception of groups to the evaluation of an instructor.
What is the null hypothesis?
What is the alternative hypothesis?
Was the null supported or rejected? Why?
What recommendations do you have for the instructor who received these evaluations?

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Course/Instructor Evaluator GroupJunior Sophomore Senior Freshman Sample Size Average Junior Sophomore Senior 40 39 4.3 Equal 41 40 4.3 4.4 4.7 Equal Unequal Equal Unequal Equal