The Sail-Like Fin on the Backs of the Pelycosaur Did

question 6

Multiple Choice

The sail-like fin on the backs of the pelycosaur did NOT function as a ____.

• A) sexual display
• B) means of locomotion
• C) means of protection
• D) means to look more ferocious
• E) thermoregulatory structure

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Definitions:

Critical Value

A threshold in hypothesis testing that defines the boundary beyond which the null hypothesis is rejected, based on the chosen significance level.

Regression Model

A statistical approach for estimating the relationships among variables.

Independent Variables

Variables in an experiment or model that are manipulated to observe their effect on dependent variables.

Degrees Of Freedom

The quantity of independent values or measures that can be allocated to a statistical distribution.