What Do We Mean by the Half-Life of a Radioactive

question 67

Multiple Choice

What do we mean by the half-life of a radioactive isotope?

• A) it is the amount of time a person can be exposed to radiation without getting sick
• B) it is the time for half the number of radioactive nuclei in a sample to become stable nuclei
• C) it is the amount of time for half of the nuclei in a sample to become radioactive
• D) it is the time for half the number of radioactive nuclei in a sample to decay

---

Definitions:

Standard Deviation

Standard deviation is a statistical measure of the dispersion or spread of data points in a dataset from their mean, indicating how spread out the values are.

Confidence Interval

A spectrum of numeric values, arising from sample statistics, viewed as likely to encircle the value of an unexposed population parameter.

Weekly Time

The amount of time, calculated on a weekly basis, devoted to a specific activity or task.

Standard Deviation

A metric utilized to determine the extent of spread or variability within a collection of data points.