An Elliptical (E) Galaxy Contains

question 51

Multiple Choice

An elliptical (E) galaxy contains

• A) mostly lower-main-sequence stars and giants.
• B) mostly upper-main-sequence stars and giants.
• C) mostly upper-main-sequence stars and gas and dust.
• D) roughly equal numbers of upper- and lower-main-sequence stars.
• E) mostly white dwarfs and supergiants.

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Definitions:

Probability

A numeric scale from 0 to 1 indicating how probable an event is to take place.

Statistic

A numerical value that describes a characteristic of a sample.

Regions of Rejection

Areas in a statistical test that, if a test statistic falls within, lead to the rejection of the null hypothesis.

Critical Value

The threshold value that the test statistic must exceed in order for the null hypothesis to be rejected.