A Geiger Counter Placed Next to a Radioactive Sample Produces

question 10

Multiple Choice

A Geiger counter placed next to a radioactive sample produces 200 counts per minute.One hour later,the Geiger counter reads 180 counts per minute.What is the half-life of the radioactive sample?

• A)1.1 hours
• B)6.6 hours
• C)9.0 hours
• D)9.5 hours
• E)10 hours

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Definitions:

Independent Variables

Variables in an experiment or model that are manipulated or categorized to determine their effect on a dependent variable.

Multicollinearity

A statistical phenomenon where several independent variables in a model are correlated, impacting the model’s accuracy.

Dependent Variables

Variables in an experiment or model that are expected to change as a result of changes in the independent variables.

Multicollinearity

A situation in multiple regression where one predictor variable in the model can be linearly predicted from the others with a substantial degree of accuracy.