Objects with Masses Between 13 and 75 Times the Mass

question 120

Multiple Choice

Objects with masses between 13 and 75 times the mass of Jupiter do not fuse hydrogen but do fuse deuterium and lithium into helium. What are such objects called?

• A) extrasolar planets
• B) sub-brown dwarfs
• C) brown dwarfs
• D) red dwarfs

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Definitions:

Critical Value

A point on the scale of a statistical distribution that is used to determine the boundary for rejecting the null hypothesis in hypothesis testing.

One-sample T-test

A statistical test used to compare the mean of a single sample to a known average or standard value.

Parametric Counterpart

Refers to statistical tests or models that assume a certain distribution shape for the underlying data, as opposed to non-parametric methods which do not.

Kruskal-Wallis Test

A nonparametric test used to determine if there are statistically significant differences between two or more groups of an independent variable on a continuous or ordinal dependent variable.