Two Radioactive Isotopes, X and Y, Both Decay to Stable

question 62

Multiple Choice

Two radioactive isotopes, X and Y, both decay to stable products. The half-life of X is about a day, while that of Y is about a week. Suppose a radioactive sample consists of a mixture of these two
Nuclides. If the mixture is such that the activities arising from X and Y are initially equal, then a few
Days later the activity of the sample will be due

• A) predominantly to Y.
• B) predominantly to X.
• C) to X and Y equally.
• D) entirely to Y.

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Definitions:

Process Range Chart

A control chart that monitors the dispersion or variability of a process, helping to ensure a process is stable and predictable over time.

Variation

Variation refers to the degree of change or difference in a condition or process, often analyzed to improve quality and performance in manufacturing.

Statistical Process Control

A method of quality control which uses statistical methods to monitor and control a process.

Small Samples

Investigations or analyses that involve a relatively small number of observations or data points, which may require special statistical techniques to infer conclusions.