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A study is conducted to determine if the difference in mean FEV-1 between treated and control groups after a month of intervention is different than

A study is conducted to determine if the difference in mean FEV-1 between treated and control groups after a month of intervention is different than 0.

The study observes a between-group difference of 10 percentage points (84% in the treated vs. 74% in the controls) with a standard error of 5.

Calculate the p-value.

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