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A normal approximation for the Wilcoxon rank-sum test is appropriate when:

rafiki121

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A normal approximation for the Wilcoxon rank-sum test is appropriate when:

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\(\style{font-family:Times New Roman;}{n_1\text{ and}\;n_2\geq20}\).

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\(\style{font-family:Times New Roman;}{n_1\;\text{and}\;n_2\geq8}\).

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\(\style{font-family:Times New Roman;}{n\geq30}\).

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\(\style{font-family:Times New Roman;}{e_i\geq5}\)for all categories.

Textbook

Introductory Statistics: A Problem-Solving Approach

Edition: 3^rd

Author: Kokoska

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Jessicav1126

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More solutions for this book are available here

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rafiki121 Author

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Thanks for your help!!

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This site is awesome

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