The Half-Life of the Radium Isotope Ra-226 Is Approximately 1,599

question 37

Multiple Choice

The half-life of the radium isotope Ra-226 is approximately 1,599 years.What percent of a given amount remains after 100 years? Round your answer to two decimal places. ​

• A)95.76 %
• B)5.96 %
• C)97.76 %
• D)3.13 %
• E)0.96 %

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Definitions:

Factorial Analysis

A statistical approach that explains the variance among observed, correlated variables by a smaller set of unobservable variables known as factors.

Well-Being

A comprehensive term for the condition of an individual or group, encompassing physical, psychological, and social aspects.

Cohorts

Groups of individuals sharing a common characteristic or experience within a defined period, often used in studies to examine the effects over time.

Null Hypotheses

Hypotheses that state there is no significant difference or relationship between specified populations, any observed difference being due to sampling or experimental error.