Tritium (³H) Is Used in Glowing "EXIT" Signs Located Where

question 43

Short Answer

Tritium (³H) is used in glowing "EXIT" signs located where there is no electricity for lightbulbs. If the half-life of tritium is 12.26 years, what percentage of the original quantity of the isotope is left after 18.5 years?

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Definitions:

Association

In statistics, it refers to a relationship or linkage between two or more variables whereby they tend to vary together in a predictable manner.

Household Income

The combined gross income of all members of a household, typically measured annually.

Classification

The process of organizing or sorting items into categories based on their attributes or characteristics.

Sample Surveys

Research methods that collect data from a subset of a population to make inferences about the entire population.