A Radioactive Substance Is Decaying Exponentially with Yearly Decay Factor

question 10

Multiple Choice

A radioactive substance is decaying exponentially with yearly decay factor 0.95. What is the decade decay factor?

• A) 0.1
• B) 0.99
• C) 9.5
• D) 0.6

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Definitions:

Independent Variable

A variable in an experiment or model that is manipulated to observe its effect on a dependent variable.

Dependent Variable

The variable in an experiment or study that is affected by changes in the independent variable, representing the output or outcome.

Dummy Variables

Variables created to represent categorical data with two or more categories by assigning binary values (0 or 1), allowing them to be used in regression models.

Qualitative Variables

Variables that express qualitative attributes, and are usually described by non-numeric categories or groups.