Week 5 - Hypothesis Testing II: One-sample z-test and t-test

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Last updated 11:59 PM on 10/4/26
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4 Terms

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“Is the mean different from a baseline?”

  1. Statistical Significance: is the mean difference from a baseline in the sample strong enough to believe that is reflects something real about this population and not a fluke?

  2. Practical Significance: is the mean difference big enough to care?


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Hypothesis Testing About One Sample Mean

  • Is the mean different from a baseline?

    • Statistical Significance: Is it really that different?

      • Null Hypothesis

      • p-value

      • Decision: is the difference big enough to believe it’s real?

    • Practical Significance: Big enough difference to care?

      • effect size


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