What Is Unique About a Low-Mass Red Dwarf Star Compared

question 140

Multiple Choice

What is unique about a low-mass red dwarf star compared with stars at other stages of evolution, such as main-sequence stars?

• A) A low-mass red dwarf is the smallest in size of any star.
• B) Nuclear fusion occurs not in the core of a red dwarf but in a region just beneath its surface.
• C) A red dwarf has the lowest surface temperature of any star.
• D) Convection occurs throughout the interior of a red dwarf such that the star does not develop separate core and outer layer regions.

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Definitions:

Critical Value Approach

A method of statistical testing which involves comparing the calculated value of a test statistic to a critical value to decide whether or not to reject the null hypothesis.

Null Hypothesis

A statement used in statistics that proposes there is no significant difference or effect, serving as the default assumption to be tested against an alternative hypothesis.

Test Statistic

A statistic (a function of the data) used in statistical hypothesis testing to decide whether to reject the null hypothesis.

P-value Approach

A method in hypothesis testing that uses the p-value, the probability of obtaining test results at least as extreme as the observed, under the assumption the null hypothesis is true.