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- Court is now in session! The Null Hypothesis (H₀) is presumed innocent , that there’s no effect or no difference. The Alternative Hypothesis (H₁) accuses it of being false that there is an effect!
- H0=innocent
- H1=guilty
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- Before we begin, we must decide how strict this court is!Today’s significance level (α) is 0.05 meaning we only convict if the evidence is really strong
- H0=innocent
- H1=guilty
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- z=-2.3
- Here’s our key piece of evidence ,it measures how far our sample is from the population’s claim
- H1=guilty
- H0=innocent
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- We crunched the numbers and got a p-value the probability that this evidence could happen if the null were true.
- H1=guilty
- p=0.03
- H0=innocent
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- Now I will give the jury time to discuss.If p α, the evidence is strong=we reject the null and declare it guilty!If p α, the evidence is weak we retain the null and say not guilty!
- H0=innocent
- H1=guilty
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- The jury has made a decision, based on our evidence, we reject the null hypothesis. There is significant evidence that the claim is false.
- H1
- H0=rejected!
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