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We add the explanations your academic materials are missing. Perfect for catching up on missed lectures or preparing for exams.
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Since December 2025, we've generated over 25,000 explanations for students
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Slide-by-slide explanations
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Try for freeThe p-value of 0.03 shown here means: if nothing was actually happening, you'd only see results this extreme 3% of the time. That's rare enough to reject the null...
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Does rejecting the null prove we're right?
Not exactly. It means the data is unlikely if the null were true. We're rejecting that, not proving the alternative—an important distinction for your exam!
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BSc Economics, Warwick University
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