Perform a Kruskal-Wallis test using the critical-value approach.
-SAT scores for students selected randomly from three different schools are shown below. At the 0.05 significance level, do the data provide sufficient evidence to conclude that a difference exists between the three population means?

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-SAT scores for students selected randomly from three different schools are shown below. At the 0.05 significance level, do the data provide sufficient evidence to conclude that a difference exists between the three population means?

Perform a Kruskal-Wallis Test Using the Critical-Value Approach