The Orbits of Stars Around the Center of the Milky

question 95

Multiple Choice

The orbits of stars around the center of the Milky Way Galaxy suggest that the mass at the center of the Galaxy is about 4 million solar masses. What is believed to be the diameter of this supermassive object?

• A) about half a parsec
• B) about 8 ly
• C) smaller than Earth's orbit
• D) smaller than the diameter of the Sun

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Definitions:

Test Statistic

A test statistic is a calculated value from sample data, used in statistical hypothesis testing to determine the likelihood of a given hypothesis.

Kleenex Tissues

A brand of paper tissues commonly used for personal hygiene and cleaning purposes.

Hypothesis Testing

A statistical approach that utilizes data from a sample to test a theory regarding a population's parameter.

Normally Distributed Population

A population in which the data follows a normal distribution, having a bell-shaped frequency distribution curve.