Two Identical Stars Are Located at Different Distances, One Star

question 21

Multiple Choice

Two identical stars are located at different distances, one star at 2.0 pc and the other at 6.0 pc. How many times greater is the apparent brightness of the nearer star when compared to the more distant one?

• A)1.7 times
• B)3.0 times
• C)9.0 times
• D)18 times
• E)27 times

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Definitions:

Hypothesis Test

A method of statistical inference used to decide whether there is enough evidence to reject a null hypothesis about a population parameter based on sample data.

P-Value

The probability of observing results at least as extreme as those in the data, assuming the null hypothesis is true, used as a method to test hypotheses.

Large-Sample Z

A statistical test used for hypothesis testing or constructing confidence intervals when the sample size is large, typically using the Z-distribution.

Major Defects

Significant imperfections or flaws in a product, system, or process that adversely affect its performance, safety, or intended function.