The Following Questions Refer to the Paragraph and Graphs Below

question 29

Multiple Choice

The following questions refer to the paragraph and graphs below.
In a hypothetical situation, the National Park Service, which administers Grand Canyon National Park in Arizona, builds a footbridge over the Colorado River at the bottom of the canyon. The footbridge permits interspersal of two closely related antelope squirrels. Previously, one type of squirrel had been restricted to the terrain south of the river, and the other type had been restricted to terrain on the north side of the river. Immediately before and ten years after the bridge's completion, ten antelope squirrels from both sides of the river were collected, blood samples were taken, and frequencies of alleles unique to the two types of antelope squirrels were determined (see graphs below) .


-The results depicted in the graphs above are best accounted for by which of the following facts?

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Definitions:

Test Statistic

A figure derived from data within a sample, utilized to determine the rejection of the null hypothesis in the context of statistical hypothesis testing.

P-value

A measure in statistical hypothesis testing that helps determine the significance of results.

Two-Tailed Test

A statistical test of hypothesis where the area of interest spans both tails of the distribution, allowing for investigation of deviations in two opposite directions.

Sample Proportions

The fraction or percentage of observations in a sample that fall into one particular category or class.