e Tools 16. Dr. Rueckert wonders whether students in her SRM II class might do b

Question

e Tools 16. Dr. Rueckert wonders whether students in her SRM II class might do better on her exams as they get more experience in taking them. To study this, she compares students' scores on the 3 exams she gave during the semester. There were 25 students in her class. Fill in the blanks for the following within-subjects ANOVA (5 pts) Sum of Squares Mean Square F critical Source 5.73 2.85 381.6 Exam Subjects Total 17. Is there a significant difference between scores on the 3 exams?Why or why not? (1 pt)

Explanation / Answer

from above below is completed ANOVA table:(Note for level of significance lot given it is taken 0.05 for F critical calculation)

17) as test statistic is lower than critical value we do not have evidence of differnece in means

source SS df MS F F critical exm 5.73 2 2.87 0.3604 3.191 subjects 2.85 24 0.12 0.0149 1.746 error 381.6 48 7.95 total 390.18 74

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