A Functional Explanation of Why Giraffes Have Such Long Necks

question 80

Multiple Choice

A functional explanation of why giraffes have such long necks is that:

• A) it lowers the blood pressure in their brains.
• B) their necks became longer because they stretched them.
• C) it allows them greater access to their food supply.
• D) parent giraffes make their babies reach for food.

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Definitions:

Effect Size

A quantitative measure of the strength of a phenomenon, used to indicate the magnitude of a difference or relationship within the context of a statistical analysis.

T-Tests

Statistical tests used to compare the means of two groups to see if there is a significant difference between them.

Type I Error

A Type I Error occurs when a true null hypothesis is incorrectly rejected, also known as a "false positive."

Statistical Power

Statistical power refers to the probability that a statistical test will correctly reject a false null hypothesis, effectively detecting an effect when there is one.