​What Is One Likely Explanation for Why Horses Evolved a Tendency

question 34

Multiple Choice

​What is one likely explanation for why horses evolved a tendency to sleep few hours per night?

• A)They have less need than other species to consolidate their memories.
• B)​They eat a diet that is unusually rich in calories.
• C)​They are at high risk of being attacked during their sleep.
• D)​They have higher body temperatures than most other mammals.

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Definitions:

Standard Normal Distribution

A normal distribution with a mean of 0 and a standard deviation of 1.

Type I Error

The incorrect rejection of a true null hypothesis, also known as a "false positive" finding.

Null Hypothesis

A hypothesis used in statistics that proposes no significant difference or effect, serving as a default position until evidence suggests otherwise.