8.4: The Alternative Hypothesis - Statistics LibreTexts
https://stats.libretexts.org/Courses/Rio_Hondo_College/PSY_190%3A_Statistics_for_the_Behavioral_Sciences/08%3A__Introduction_to_Hypothesis_Testing/8.04%3A_The_Alternative_Hypothesis
WEBThe alternative hypothesis is simply the reverse of the null hypothesis, and there are three options, depending on where we expect the difference to lie. Thus, our alternative hypothesis is the mathematical way of stating our research question.
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