A high school principal is interested in determining whether students perform di

Question

A high school principal is interested in determining whether students perform differently throughout the high school years. The grade point averages for 10 randomly selected high school students in each of the four classes (freshman, sophomore, junior and senior) were recorded. If we wish to test for significant differences among the population mean grade point averages for the four classes, what are the null and alternative hypotheses? Let f represent freshman, so represent sophomore, j represent junior and sr represent senior.

a. b. c. d. H0.My = so-Hj=My versus Ha: 1 soHjSY a.Myso3

Explanation / Answer

Ans: Option d   

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