Krypton-79 Has a Half-Life of 35 Hours

question 17

Multiple Choice

Krypton-79 has a half-life of 35 hours. How many half-lives have passed after 105 hours?

• A)1 half-life
• B)2 half-lives
• C)3 half-lives
• D)4 half-lives
• E)5 half-lives

---

Definitions:

SSE

The sum of squared errors, a measure used in statistical analysis to quantify the variation or dispersion of data points around a fitted line or curve.

Slope

The rate of change in the variable on the y-axis per unit change in the variable on the x-axis in a coordinate plane, indicative of the steepness of a line.

Regression Line

A regression line is a straight line that best describes the data on a scatter plot, providing the best fit for the relationship between the independent and dependent variables.

Sales

The activities related to selling or the number of goods or services sold in a given time period.