How Long Does It Take for 105 Mg of Tritium ${ }_{1}^{3} \mathrm{H}$

question 26

Multiple Choice

How long does it take for 105 mg of tritium, ${ }_{1}^{3} \mathrm{H}$ ,to decay to 35.0 mg? The half-life of tritium is 12.3 yr.

• A) 12.3 yr
• B) 14.2 yr
• C) 19.5 yr
• D) 24.6 yr
• E) 36.9 yr

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Definitions:

Confidence

In statistics, the degree of certainty or probability that a parameter lies within a specified range of values.

Randomly Sample

A method of selecting a subset of individuals from a population in such a way that each individual has an equal chance of being chosen.

Clear Majority

A situation or result in which a significantly larger portion of a group supports a particular outcome or opinion over all others combined.

Hypothesis Test

A statistical method that uses sample data to evaluate a hypothesis about the properties of a population.