Two Red Stars Have Surface Temperatures of 3000 K, but Star

question 4

Multiple Choice

Two red stars have surface temperatures of 3000 K, but Star A's luminosity is about 5% ofthe Sun's and Star B's luminosity is about 32,000 times the luminosity of the Sun. How muchbigger is star B than star A?

• A)They are the same size.
• B)Star B's radius is about 16 times larger than star A's radius.
• C)Star B's radius is about 800 times larger than star A's radius.
• D)Star B's radius is about 640,000 times larger than star A's radius.
• E)This cannot be determined from the information given.

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Definitions:

Experimental Units

The smallest division of experimental material to which a treatment is independently applied in a study or experiment.

Treatment

An intervention or condition that experimenters apply to subjects or experimental units in a study to observe its effect.

Partial ANOVA Table

A simplified presentation of the results from an Analysis of Variance, showing selected sources of variation and their impact on a dependent variable.

Significance Level

The threshold below which a result is considered statistically significant, commonly used in hypothesis testing to determine if results can reject the null hypothesis.