Confidence Intervals · 2020. 9. 28. · FISHER GOSSET BAYES . n A manufacturer of TV sets wants...

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Confidence Intervals STAT 3202 | OSU | Dalpiaz

Transcript of Confidence Intervals · 2020. 9. 28. · FISHER GOSSET BAYES . n A manufacturer of TV sets wants...

Page 1: Confidence Intervals · 2020. 9. 28. · FISHER GOSSET BAYES . n A manufacturer of TV sets wants to find the average selling price of a particular model. A random sample of 25 different

Confidence IntervalsSTAT 3202 | OSU | Dalpiaz

Page 2: Confidence Intervals · 2020. 9. 28. · FISHER GOSSET BAYES . n A manufacturer of TV sets wants to find the average selling price of a particular model. A random sample of 25 different
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Confidence Intervals for Means

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Let’s consider the “usual” setup where we have an (iid) random sample from a normal distribution with parameters μ and σ.

How do we estimate μ?

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For a moment, let’s pretend we live in some fantasy land where σ is known.

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What if we live in reality where σ is unknown?

What do we do now?

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Confidence Intervals for Proportions

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Confidence Intervals for Variances

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Confidence Intervals for Difference of Proportions

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Confidence Intervals for Difference of Means

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