What Is the Source of the Large Dust Shells Seen

question 91

Multiple Choice

What is the source of the large dust shells seen around some red giants and red supergiants?

• A)leftover material from their formation
• B)debris left behind by a supernova
• C)material from winds from these same stars
• D)debris left behind by passing comets
• E)star-forming molecular clouds

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Definitions:

Statistical Significance

A statistical measure that helps to determine whether the observed findings are unlikely to have occurred by chance.

T Value

A value calculated from sample data used to assess whether a null hypothesis should be rejected in the context of a t-test.

Population's Standard Deviation

A measure of the dispersion or spread of scores within a given population, indicating the average distance from the mean.

Observed Z Value

The value resulting from a Z-test statistic used in hypothesis testing, representing how many standard deviations an observation is from the mean.