study guide 2

# study guide 2 - Statway Module 8 Study Guide Vergara S13...

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Statway Module 8 Study Guide Vergara S13 SJSU Name: ___________________________ To study for Module 8: (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 8 without looking at the answers, and then checking the answer to make sure you got it right. 1. Sample proportion ̂ , population proportion , sample size 2. Normality criteria: and ( ) or and 3. Standard deviation ( ) ; standard deviation is also known as standard error a. If is not known, then we use ̂( ̂) as an estimate for the standard deviation 4. Margin of error, where is: a. (90% confidence), (95% confidence), (99% confidence) 5. Confidence intervals: ( ̂ ̂ ) ; be able to calculate them using critical values like in TIH 8.1.1 #7. 6. What happens to the standard deviation and accuracy of the estimate of when the sample size is increased 7. Writing hypotheses and : a. Identify whether there are 1 or 2 populations b. Identify the variable and whether it is quantitative or categorical & identify the parameter c. (or or ) 8. What is a -value? How do you find the -value? How to you use the -value to make a conclusion?

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