A Scientist Is Hoping to Compare the Levels of DDT

question 32

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 7 of each species to use in the analysis. For each fish, he measures the amount of DDT toxin present. The data is shown below: $$\begin{array}{l}\text { Species }\\\begin{array} { c | c | c } 1 & 2 & 3 \\\hline 8.4 & 4.5 & 0.58 \\15 & 4.2 & 2 \\25 & 3 & 2.2 \\5.6 & 2.3 & 7.4 \\4.6 & 2.5 & 0.35 \\8.2 & 6.8 & 1.9 \\6.1 & 5.1 & 2.7\end{array}\end{array}$$ Ideally he will be able to determine if a difference exists in the population of DDT toxins found in the three fish species. Identify the test statistic for the Kruskal-Wallis H-Test.

• A) H = 17.0
• B) H = 10.286
• C) H = 11.718
• D) H = 5.714

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