The Flatness Problem and Horizon Problem

question 47

Multiple Choice

The flatness problem and horizon problem

• A) are solved if there was a sudden inflation of the universe at time before recombination occurred.
• B) show that the universe can be described as static and unchanging.
• C) show that dark matter must be a small fraction of the total mass of the universe.
• D) imply that the universe was once much colder than it is now.
• E) imply that the inflationary theory is incorrect.

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Definitions:

Critical Value

A threshold value in statistical testing used to determine whether to reject the null hypothesis.

Alpha

The threshold of significance in hypothesis testing, representing the probability of committing a Type I error.

Difference Scores

The subtraction results of one set of numerical data from another, used to analyze changes or effects in experiments.

Null Hypothesis

The null hypothesis is a statement that there is no effect or no difference, and it serves as the assumption to be tested in statistical analyses.