Which of the Following Gives the Two Main Assumptions of Theoretical

question 5

Multiple Choice

Which of the following gives the two main assumptions of theoretical models of galaxy evolution?

• A)Hydrogen and helium filled all of space, and certain regions of the universe were slightly denser than others.
• B)The beginning of the universe is modeled after a supernova explosion, and all elements were produced by this exploding star.
• C)Hydrogen and helium filled all of space, and the entire universe had exactly the same density everywhere.
• D)The universe has always been expanding, and denser areas contracted to form the first stars.
• E)The universe was composed originally only of hydrogen, and all the other elements came from stars.

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Definitions:

Expected Frequency

The predicted count of occurrences in each category of a statistical distribution, used as a comparison in chi-square tests.

Type B

A personality typology that describes individuals as more relaxed, non-competitive, and generally less stressed than their Type A counterparts.

Expected Frequency

The theoretical frequency of an event or category based on a probability distribution in statistical analysis.

Expected Frequency

The theoretical frequency or count of occurrences predicted for a category within a distribution, based on probability calculations.