Gopher Tortoises Regularly Abandon Their Burrows and Build New Ones

question 17

Multiple Choice

Gopher tortoises regularly abandon their burrows and build new ones to accomadate their changing size and food requirements.The eastern indigo snake often makes its home in these abandoned burrows.How would you characterize this relationship and its effect on each member?

• A)parasitism: indigo snake +,gopher tortoise -
• B)competition: indigo snake -,gopher tortoise -
• C)commensalism: indigo snake 0,gopher tortoise +
• D)parasitism: indigo snake 0,gopher tortoise -
• E)commensalism: indigo snake +,gopher tortoise 0

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Definitions:

Test Statistic

A quantity derived from sample data and used in statistical hypothesis testing to decide whether to reject the null hypothesis.

P-Value

The likelihood of witnessing outcomes in a test that are as extreme or more so than the observed ones, provided that the null hypothesis is accurate.

Randomized Block Experiment

An experimental design that aims to reduce the effects of variables known as blocks by randomly assigning treatments within each block.

Rank Sums

A statistic used in non-parametric tests that involves summing the ranks of observations in one of two samples when comparing medians.