isds study guide

# isds study guide - 2. Know definitions of Type I and II...

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TEST 3 STUDY GUIDE CHAPTER 8 1. Understand that there are two types of estimates. 2. Know how to calculate an interval estimate for the population mean when σ is known. 3. Know how to calculate an interval estimate for the population mean when σ is unknown. 4. Know that for Interval Estimates for the population mean, either the population must be normal or the sample size must be at least 30. This ensures that the sampling distribution of sample means is normal. 5. Know how to calculate an interval estimate for the population proportion. 6. Know that for Interval Estimates for the population proportion, This ensures that the sampling distribution of sample proportions is normal. 7. Understand the meaning of the confidence interval. 8. Understand how the sample size effects the width of the confidence interval and the margin of error. 9. Understand how the confidence level effects the width of the confidence interval and the margin of error. CHAPTER 9 1. Know how to set up null and alternative hypotheses.

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Unformatted text preview: 2. Know definitions of Type I and II errors. 3. Know the consequences of Type I or II error. 4. For both z-tests and t-tests for testing hypotheses about a population mean μ, you will be expected to a. calculate test statistics b. find critical value based upon alpha c. make decision and be able to interpret for decision-making purposes. d. for the z-test, be able to calculate a p-value 5. Know that for Hypothesis Testing for the population mean, either the population must be normal or the sample size must be at least 30. This ensures that the sampling distribution of sample means in normal. 6. For a z-test for proportions p, you will be expected to a. calculate test statistics b. find critical value based upon alpha c. make decision and be able to interpret for decision-making purposes. 7. Know that for Hypothesis Testing for the population proportion, This ensures that the sampling distribution of sample means in normal....
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## This note was uploaded on 04/13/2008 for the course ISDS 2000 taught by Professor Nunnery during the Spring '08 term at LSU.

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isds study guide - 2. Know definitions of Type I and II...

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