Refer to the Figure

question 36

Multiple Choice

Refer to the figure.

- The figure is based on Johnson's experiment on the effects of trematode parasites on tadpoles. Which claim is supported by the figure?

• A) As the number of parasites that the tadpoles were exposed to decreased, the percentage of surviving frogs with deformities increased.
• B) As the number of parasites that the tadpoles were exposed to increased, the percentage of surviving tadpoles decreased.
• C) If there were no parasites present, 100% of the tadpoles survived to metamorphosis.
• D) Tadpoles with moderate levels of parasites had the lowest percent of deformities in adults.

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Definitions:

Within-group Variability

Refers to variations in observations within individual groups or categories in a dataset.

Null Hypothesis

The hypothesis that assumes no significant difference or relationship exists between specified populations or parameters.

Sample Size

The number of observations or data points that are collected from a subset of a larger population for the purposes of statistical analysis.

Pragmatic Concerns

Practical considerations or limitations that affect how research or a policy can be implemented.