Iron Has 26 Protons in Its Nucleus, and Gold Has

question 4

Multiple Choice

Iron has 26 protons in its nucleus, and gold has 79 protons. Where did all the gold on the Earth come from?

• A) nucleosynthesis on the surfaces of neutron stars
• B) nucleosynthesis that took place in supernova explosions
• C) nucleosynthesis in the cores of low-mass stars
• D) nucleosynthesis in the cores of massive stars
• E) nucleosynthesis in red giant and horizontal-branch stars

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Definitions:

Test Statistic

A numerical figure derived from sample data for the purpose of testing a hypothesis within the field of statistics.

Randomized Block

A design in experiments where the experimental subjects are first divided into blocks based on external factors that might influence the results, and then randomly assign treatments within each block to minimize variability.

Analysis of Variance

A statistical method used to test differences between two or more means by analyzing variance among and between groups.

Sign Test

The Sign Test is a nonparametric test used to determine if there are significant differences between the medians of two paired samples.