Question: 15.17 Consider a problem with four subgroups with the sum of ranks in each of the subgroups equal to 227, 151, 198, and 271 and

15.17 Consider a problem with four subgroups with the sum of ranks in each of the subgroups equal to 227, 151, 198, and 271 and with subgroup sizes equal to 5, 9, 15, and 12. Complete the Kruskal-Wallis test and test the null hypothesis to determine whether the subgroups have equal means at 1% significance level.

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