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how to solve? 6) The summary analysis of test scores for selected samples of Introduction to Statistical Economics students who took the course from three

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6) The summary analysis of test scores for selected samples of Introduction to Statistical Economics students who took the course from three different instructors are shown below. Descriptives Table Score N Mean Std. Deviation Instructor A 77.3333 9.97330 Instructor B 80.0000 16.95091 Instructor C 88.0000 5.70088 Jumlah Total 15 81.6000 11.38169 ANOVA Table Sources Sum of Squares df Mean Square F Treatments 324.267 162.133 1.306 Error 1489.333 12 124.111 Total 1813.600 14 At a = 0.05, is there a significant difference among the averages of the three group

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