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Mathematics 8 Online
OpenStudy (andijo76):

in order to have the same percentage of critical region on both sides of the distribution for a non-directional hypothesis as you would for a directional hypothesis (e.g. 5%) you would need to increase the alpha level. With 2 regions of 5% we now have an alpha of .10 instead of .05. Why does this matter? This seems simple, why don't we just say if we conducting a 2 tailed test increase the alpha to .10?

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