Most Active Galactic Nuclei Are Found at Large Distances from Us

question 117

Multiple Choice

Most active galactic nuclei are found at large distances from us, with relatively few nearby. What does this imply?

• A) Active galactic nuclei tend to become less active as they age.
• B) Supermassive black holes existed only when the universe was young, and no longer exist today.
• C) Active galactic nuclei can form only at large distances from the Milky Way.
• D) The jets seen in many active galactic nuclei must cause them to move far away from us.

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Definitions:

Statistical Significance

A measure that indicates how likely it is that a result obtained from data analysis is not due to chance.

Test-Retest Reliability

A measure of consistency where a test is administered to the same group of individuals at two different points in time, and the scores are correlated to assess the test's reliability over time.

Informant Report

A method of assessment where information about a subject is reported by someone else, often used in psychological evaluations.

Clinical Interview

A structured interaction between a healthcare provider and a client used to assess the client's psychological functioning and diagnose mental disorders.