Which of the Following Radioisotopes Could Be Used to Accurately

question 67

Multiple Choice

Which of the following radioisotopes could be used to accurately date a fossil that is thought to be over 750 million years old?

• A)²³⁸U
• B)¹⁴C
• C)²³⁵U
• D)²³⁵U or ²³⁸U
• E)¹⁴C or ²³⁵U

---

Definitions:

Normal Probability Plot

A graphical technique for assessing whether or not a data set is approximately normally distributed, utilizing a plot of sorted values versus their expected values under normality.

Residuals

Differences between observed and predicted values of data in statistical models, indicating the error in predictions.

Normally Distributed

A statistical distribution depicting data that is evenly spread out across the mean, showing the predictable variability of values.

Regression Analysis

A statistical method for examining the relationship between a dependent variable and one or more independent variables.