The Reason Their Exoskeletons Cannot Protect the Corals from Sea

question 28

Multiple Choice

The reason their exoskeletons cannot protect the corals from sea stars is that the sea star

• A) is immune to the toxin of the nematocysts.
• B) thorns are sharp and toxic.
• C) tubefeet act as tiny syringes that suck the corals out of their exoskeletons.
• D) stomach can be everted, and can release digestive juices directly onto the corals.

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Definitions:

Abnormally Distributed

Indicative of a probability distribution that does not follow a normal distribution pattern, potentially skewed or featuring heavy tails.

Un-standardized Test Statistic

A test statistic that has not been converted to a standard form, representing raw effect sizes or differences observed in data.

Standardized Test Statistic

A test statistic that has been converted into a standard form so that it can be directly compared to a distribution.

Rank Sum

A statistical measure used to compare the distributions of two or more groups by summing ranks assigned to their observations.