Question: The following data represent the operating times in hours for three types of scientific pocket calculators before a recharge is required: Use the Kruskal-Wallis test,

The following data represent the operating times in hours for three types of scientific pocket calculators before a recharge is required:

Use the Kruskal-Wallis test, at the 0.01 level of significance, to test the hypothesis that the operating times for all three calculators are equal.

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