A Scientist Is Hoping to Compare the Levels of DDT $\mathrm { F } _ { \mathbf { r } }$

question 85

Multiple Choice

A scientist is hoping to compare the levels of DDT toxin found in three species of fish in a local river. He randomly samples 50 of each species to use in the analysis. For each fish, he measures the
Amount of DDT toxin present. Ideally he will be able to determine if a difference exists in the
Population of DDT toxins found in the three fish species. What type of nonparametric analysis
Should be used?

• A) The Wilcoxon Rank Sum Test
• B) The Friedman \(\mathrm { F } _ { \mathbf { r } }\)-Test
• C) The Wilcoxon Signed Rank Test
• D) The Kruskal-Wallis H-Test
• E) The Sign Test

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