The T Test for the Mean Difference Between Two Related

question 12

Multiple Choice

The t test for the mean difference between two related populations assumes that the

• A) sample variances are equal.
• B) population sizes are equal.
• C) population of differences is approximately normal or sample sizes are large enough.
• D) all of the above

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Definitions:

Photosynthesis

A process used by plants and other organisms to convert light energy, usually from the sun, into chemical energy that can be used to fuel the organism's activities.

Ecosystems

Complex communities of organisms and their physical environment interacting as an ecological unit in nature.

Food Chains

A hierarchy of organisms each dependent on the next as a source of food, illustrating the flow of energy and nutrients.

Chlorophyll

A pigment found in plants and algae that's critical for photosynthesis, allowing them to absorb light energy.