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Testing-stimulant medications

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With this question: "Do stimulant medications cause addictive thinking and substance abuse in children and adolescents?" Please tell what are the dependent and independent variables-explain. Also with this research question generate a null and alternate statistical hypothesis. Please use mathematical computations when needed. Select an alpha level of .05, .01, or .001 with a justification. The work must be shown using the process of the hypothesis test.

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The expert tests stimulant medications.

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Hi there,

I've included my explanation in the word document.
Independent variable: participants (children and adolescents)
Dependent variable: performance index reflecting addictive thinking and substance abuse.

The null hypothesis: there is no significant difference for the mean performance index between participants without stimulant medications and participants with stimulant medications.
The ...

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