Hypothesis vs null hypothesis examples

    • [DOC File]STAT 515 -- Chapter 8: Hypothesis Tests

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      • In this case, a popular form of inference is the hypothesis test. We use data to test a claim (about a parameter) called the null hypothesis. Example 1: We claim the proportion of USC students who travel home for Christmas is 0.95. Example 2: We claim the mean …

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    • [DOC File]ST 361 Hypothesis testing

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      The null hypothesis, denoted by , is the claim that is initially assumed to be true in the hypothesis testing. The alternative hypothesis, denoted by , is the assertion that is contradictory to the null hypothesis . The null hypothesis will be rejected in favor of the alternative hypothesis only if sample evidence suggests that is false.

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    • [DOC File]MORE ABOUT HYPOTHESIS TESTING

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      Logic of Hypothesis Testing. Rules for deciding how to decide! Easier to prove something is false. Assume opposite of what you believe… try to discredit this assumption…. Two competing hypotheses: (1) Null Hypothesis ( H0 ) The one you assume is true. The one you hope to discredit (2) Alternative Hypothesis ( H1 ) The one you think is true

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    • [DOC File]EGR 252 Spring 2004 TEST 2

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      Null Hypothesis: There is no association between location and gender. Alternate Hypothesis: There is an association between location and gender. The p-value of 0.481 suggests that location and gender are not associated with respect to knee-replacement claims during June 2013. Interpretation (independence)

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    • [DOC File]Hypothesis and Non Hypothesis Research

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      Hypothesis and Non Hypothesis Research Most scientific research is hypothesis-driven. That is, it seeks to address a specific, measurable, and answerable question, which may be intermediate to its ultimate objective, but essential to attaining the same.

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    • [DOC File]RESEARCH HYPOTHESES AND QUESTIONS

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      4. The null hypothesis says that the true difference equals what value? 5. What is used to determine the probabilities that null hypotheses are true? 6. For what does p

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    • [DOCX File]Hypothesis Testing

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      A null hypothesis is a statement about the population – used as a basis for argument - it has not been proved. In fact, we are typically looking to find evidence that disputes the null. The alternate hypothesis is a logical alternative to the null. It is a statement of what the test is set up to establish and generally, a statement of the ...

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    • [DOC File]EGR 252 Spring 2004 TEST 2 - Mercer University

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      Decision: Reject the null hypothesis. Conclusion: Based on a p-value = 0.021, the data suggest that there is a statistically significant difference in the mean sodium content of at least two of the three brands. Based on the Tukey analysis shown below, the mean sodium content of Kelly Flakes and Betty Flakes are significantly different.

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    • [DOC File]Directional Hypothesess

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      Does this sample provide enough evidence to reject the null hypothesis? Assume ( = .05. Non-Directional vs. Directional Hypothesis Tests _____ Non-directional test – a hypothesis test in which observing a sample mean in either the upper or lower tail of the sampling distribution would be theoretically meaningful (a/k/a two-tailed tests)

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