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The Test Scores for Selected Samples of Sociology Students Who

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The test scores for selected samples of sociology students who took the course from three different instructors are shown below.  Instructor A  Instructor B  Instructor C 839085605590808490859195718580\begin{array} { c c c } \text { Instructor A } & \text { Instructor B } & \text { Instructor C } \\83 & 90 & 85 \\60 & 55 & 90 \\80 & 84 & 90 \\85 & 91 & 95 \\71 & 85 & 80\end{array} At α = .05, test to see if there is a significant difference among the averages of the three groups.

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