Alvarez and Others Proposed a Hypothesis That Dinosaur Extinction Occurred

question 40

Multiple Choice

Alvarez and others proposed a hypothesis that dinosaur extinction occurred because __.

• A) they sickened and died because of a cross-species epidemic
• B) the continents were flooded with seawater and they drowned
• C) all their eggs were eaten by birds and mammals
• D) the climate changed as the Ice Age began
• E) one or more asteroids impacted Earth, resulting in environmental change

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Definitions:

Independent Means

Refers to the average values of two distinct groups that are not related or influenced by each other in statistical analysis.

Normality

A statistical condition where data is symmetrically distributed around the mean, following a bell-shaped curve known as the normal distribution.

Null Hypothesis

The default hypothesis that there is no significant difference or relationship between specified populations, any observed difference being due to sampling or experimental error.

Directional Alternative

A hypothesis that outlines the anticipated direction in the variation or association among variables.