The Presence of Dwarf Galaxies Around the Milky Way Supports

question 68

Multiple Choice

The presence of dwarf galaxies around the Milky Way supports what picture of our galaxy's formation?

• A) The galaxy formed by the merger of two large galaxies, which scattered their dwarf companions to large distances.
• B) The galaxy originally formed with no dark matter but gained its dark matter by the absorption of smaller dwarf systems.
• C) The galaxy formed in a giant explosion caused by the violent collisions of clouds of dark matter.
• D) The galaxy formed a long time ago and has been passively evolving since.
• E) The galaxy formed by the merger of smaller systems.

---

Definitions:

Student t Distribution

The Student t-distribution is a probability distribution used in statistics, especially in situations where the sample size is small and the population variance is unknown.

Mean

The arithmetic average of a set of numbers, calculated by adding them together and dividing by the count of numbers.

F Distribution

The F distribution is a continuous probability distribution that arises in the analysis of variances tests, specifically in comparing statistical models.

Degrees of Freedom

The quantity of independent variables or amounts that may be allocated to a statistical distribution.