When Testing the Means of Independent Samples, the Null Hypothesis

question 58

Multiple Choice

When testing the means of independent samples, the null hypothesis is best thought of as

• A) the mean of population 1 is equal to the mean of population 2.
• B) the mean of population 1 is unequal to the mean of population 2.
• C) the mean of a set of difference scores is equal to 0.
• D) the two population means don't differ by more than 10 points.

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Definitions:

Fast-Spreading Ridge

A geological feature where tectonic plates are diverging at a rapid rate, leading to significant volcanic activity and the formation of new oceanic crust.

Hydrothermal Vents

Hydrothermal vents are openings in the sea floor from which heated mineral-rich water flows, often located near volcanically active places.

Hydrogen Sulfide

A toxic, foul-smelling gas, H2S, often associated with volcanic gases and the decomposition of organic matter.

Abyssal Plane

A flat, almost level area of the deep ocean floor, usually lying at depths between 3,000 and 6,000 meters.