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# study guide3 - Statway Module 9 Study Guide Vergara S14...

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Statway Module 9 Study Guide Vergara S’14 SJSU Name: ___________________________ To study for Module 9: (1) Review this study guide & (2) Reread/do problems from the lessons, TIH’s and MS. I think that one of the best ways to study is to redo the questions you were asked in Module 9 without looking at the answers, and then checking the answer to make sure you got it right. 1. Sample proportions ̂ and ̂ , population proportions and , sample sizes and 2. Normality criteria a. and ( ) ; and ( ) b. OR: and for both populations 3. Standard deviation (standard error): a. ( ) ( ) ̂( ̂) ̂( ̂) ̅( ̅) ̅( ̅) b. Use if and are unknown c. Use with ̅ when doing hypothesis testing. 4. Margin of error, ( ) where is: a. (90% confidence), (95% confidence), (99% confidence) 5. Confidence intervals: ( ̂ ̂ ̂ ̂ ) ; be able to find 90%, 95%, and 99% confidence intervals. 6. Writing hypotheses and : See Step 1 on the next page. 7. The mean 8. The test statistic ( ̂ ̂ ) 9. What is a -value? How do you find the -value? How to you use the -value to make a conclusion?

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