State Conclusions to Hypothesis Tests
-The Mean Monthly Gasoline Bill $\$ 130$

question 87

Multiple Choice

State Conclusions to Hypothesis Tests
-The mean monthly gasoline bill for one household is greater than $\$ 130$ . If a hypothesis test is performed, how should you interpret a decision that fails to reject the null hypothesis?

• A) There is not sufficient evidence to support the claim \(\mu > \$ 130\).
• B) There is sufficient evidence to reject the claim \(\mu > \$ 130\).
• C) There is not sufficient evidence to reject the claim \(\mu > \$ 130\).
• D) There is sufficient evidence to support the claim \(\mu > \$ 130\).

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Definitions:

Independent Variable

An independent variable is the variable in an experiment or study that is manipulated or changed by the researcher to observe its effect on the dependent variable.

Dependent Variable

In an experiment, the variable that is tested and measured, expected to change due to the independent variable.

Experimental Group

In research, a group of subjects exposed to the variable under study to determine its effects, contrasted with a control group.

Placebo

An inactive substance or treatment given to a patient instead of medication, used in controlled experiments to test effectiveness.