An Independent-Groups T-Test

question 31

Multiple Choice

An independent-groups t-test

• A)compares sample means for two related groups.
• B)compares sample means for two unrelated groups.
• C)compares standard deviations for two unrelated group.
• D)compares sample means for three or more unrelated groups.

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Definitions:

Protons

Particles with a positive charge found in the nucleus of an atom, playing a role in the atom's mass and total charge.

Neutrons

Subatomic particles found in the nucleus of an atom, with no electric charge and a mass slightly larger than that of protons.

Solvent

A substance that dissolves a solute, resulting in a solution; usually a liquid but can also be a solid or gas.

Water

A clear, flavorless, scentless, and almost invisible chemical compound that primarily makes up the waters of Earth's rivers, lakes, and seas.