Peculiar Velocities Are Produced by

question 42

Multiple Choice

Peculiar velocities are produced by

• A) erroneous redshifts.
• B) gravity.
• C) supernovae.
• D) eclipsing binary stars.

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Definitions:

Z Test Statistic

A statistic that measures the difference between the observed value and the hypothesized population mean in units of the standard deviation.

Null Hypothesis

Refers to a statement or assumption that there is no difference or effect, used as a starting point for statistical testing to be challenged by the alternative hypothesis.

Level Of Significance

The threshold used in statistical tests to decide whether an observed effect is considered statistically significant.

P-Value

A statistical metric that helps you determine the significance of your research results, essentially telling you how likely your data would have occurred by random chance.