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Basics of Hypothesis Testing 8.2 Day 1

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Introductory Activity Put a tally mark next to the term that most accurately describes you: Blue eyes: Not blue eyes: Dr. P. Sorita Soni at Indiana University claims that 35% of the American population has blue eyes. Do you agree?

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The P-Value Method Not related to proportions!

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The P-Value Method

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Hypotheses

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Example The Microsort company claims that their product increases the probability that you will have a baby girl. If a statistician were attempting to address this claim with a hypothesis test, what would they set as the null and alternative hypotheses?

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Check Yo Self!

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The P-Value Method

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Setting the Significance Level

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Examples

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The P-Value Method

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Choosing the Test Statistic

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Example Consider the Microsort example. The null hypothesis is that p = 0.5. The sample that is returned shows that 13 out of 14 children whose parents used the product were girls. Find the test statistic that would be used to challenge the null hypothesis.

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Homework p.409: Hypotheses: #9-13 Test Statistic: #27

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