Cesium-134 Is A $\beta$ Emitter with a Half-Life of 2

question 28

Multiple Choice

Cesium-134 is a $\beta$ emitter with a half-life of 2.0 years. How much of a 2.50-g sample of cesium-134 will remain after 10 years?

• A) 0.0024 g
• B) 0.078 g
• C) 0.25 g
• D) 0.50 g
• E) None of these choices is correct.

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Definitions:

Randomized Block Experiment

An experimental design that groups participants into blocks based on certain characteristics before randomly assigning them to treatments, improving the experiment's accuracy by reducing variance.

Ordinal

Pertains to a categorical ranking where the order among values is significant but not the distance between them.

Interval

A range between two numbers or points, often used to specify the precision of an estimate or the coverage of a dataset.

Kruskal-Wallis Test

The Kruskal-Wallis Test is a non-parametric statistical test used to determine if there are statistically significant differences between two or more groups of an independent variable on a continuous or ordinal dependent variable.