The final examination grades of random samples of students from three different classes are shown below.

At the $\alpha$ = .05 level of significance, is there any difference in the mean grades of the three classes?

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The final examination grades of random samples of students from three different classes are shown below.
 
 At the $\alpha$ = .05 level of significance, is there any difference in the mean grades of the three classes?

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The Answer of The final examination grades of random samples of students from three different classes are shown below.
 
 At the $\alpha$ = .05 level of significance, is there any difference in the mean grades of the three classes?

The Final Examination Grades of Random Samples of Students from Three