A Scientist Is Hoping to Compare the Levels of DDT $\mathrm { H } = 10.286$

question 29

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:


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) \(\mathrm { H } = 10.286\)
• B) \(\mathrm { H } = 17.0\)
• C) \(\mathrm { H } = 11.718\)
• D) \(\mathrm { H } = 5.714\)

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Definitions:

Atlantoaxial

Pertaining to the joint between the atlas (C1 vertebra) and the axis (C2 vertebra) that allows for the rotation of the head.

Cartilaginous Joints

Joints where the bones are attached by cartilage, allowing for more movement than fibrous joints but less movement than synovial joints.

Hyaline Cartilage

A translucent, bluish-white type of cartilage present in the joints, respiratory tract, and other sites, providing a smooth surface for joint movement as well as support and flexibility.

Fibrocartilage

A type of cartilage with a dense interwoven network of collagen fibers, providing strong support and resisting pressure.