Use a 0.05 significance level with the Kruskal-Wallis test to test the claim that the samples of Flesch-Kincaid Grade Level measurements are from books with the same median reading level.

Use the Flesch-Kincaid Grade Level measurements from randomly selected pages in Tom Clancy?s The Bear and the Dragon, J. K. Rowling?s Harry Potter and the Sorcerer?s Stone, and Leo Tolstoy?s War and Peace. Those measurements reflect the reading level of the sampled text.

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Clancy 8.8 5.4 5.0 7.6 9.0 3.2 12.0 4.9 4.6 5.0 6.4 6.1 Rowling 5.2 3.7 6.1 4.9 4.4 3.2 5.6 6.9 5.7 4.1 6.7 4.4 Tolstoy 8.6 9.8 6.1 5.9 7.7 10.9 8.2 7.2 11.0 11.5 8.4 5.9