Science (Hypothesis)

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The null hypothesis is the hypothesis of no difference, while the hypothesis is what you expect to occur, right? So, what if what you expect to occur is the null? Can you do this? For example,

Null: Mice prefer areas along the wall and areas along the edges equally.
Hypothesis: Mice show no preference for either area because their lack of explorative behavior and risk-taking nature will cancel each other out.

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