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Transcript of Copyright © 2013 Pearson Education, Inc. All rights reserved Chapter 9 Inferences Based on Two...
![Page 1: Copyright © 2013 Pearson Education, Inc. All rights reserved Chapter 9 Inferences Based on Two Samples Confidence Intervals and Tests of Hypotheses.](https://reader035.fdocuments.in/reader035/viewer/2022081419/5697bfee1a28abf838cb9414/html5/thumbnails/1.jpg)
Copyright © 2013 Pearson Education, Inc. All rights reserved
Chapter 9
Inferences Based on Two Samples
Confidence Intervals and Tests of Hypotheses
![Page 2: Copyright © 2013 Pearson Education, Inc. All rights reserved Chapter 9 Inferences Based on Two Samples Confidence Intervals and Tests of Hypotheses.](https://reader035.fdocuments.in/reader035/viewer/2022081419/5697bfee1a28abf838cb9414/html5/thumbnails/2.jpg)
Copyright © 2013 Pearson Education, Inc. All rights reserved
9.1
Identifying the Target Parameter
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Procedure
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Copyright © 2013 Pearson Education, Inc. All rights reserved
9.2
Comparing Two Population Means: Independent Sampling
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Table 9.1
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Figure 9.1 SPSS analysis of diet study data
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Figure 9.2 Sampling distribution of 1 2( )x x
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Definition
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Procedure
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Procedure
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Definition
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Figure 9.3 Rejection region for Example 9.2
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Figure 9.4 The observed significance level for Example 9.2
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Figure 9.5 Assumptions for the two-sample t; (1) normal populations; (2) equal variances
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Procedure
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Procedure
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Definition
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Table 9.2
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Figure 9.6 SAS printout for Example 9.4
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Figure 9.7 Normal probability plots for Example 9.4
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Figure 9.8 MINITAB box plots for Example 9.4
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Procedure
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Procedure
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Figure SIA9.1 MINITAB comparison of two price change means
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Figure SIA9.2 MINITAB comparison of two Trading volume means
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9.3
Comparing Two Population Means: Paired Difference Experiments
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Table 9.3
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Figure 9.9 MINITAB printout of an invalid analysis of reading test scores in 9.3
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Table 9.4
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Figure 9.10 Rejection region for Example 9.4
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Figure 9.11 MINITAB paired difference analysis of reading test scores
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Procedure
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Procedure
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Definition
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Definition
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Table 9.5
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Figure 9.12 SAS analysis of salary differences
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Figure 9.13 SPSS analysis of salaries, assuming independent samples
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Procedure
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9.4
Comparing Two Population Proportions: Independent Sampling
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Table 9.6
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Definition
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Procedure
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Procedure
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Definition
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Table 9.7
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Figure 9.14 Rejection region for Example 9.6
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Figure 9.15 MINITAB output for test of two proportions
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Figure SIA9.3 MINITAB comparison of two proportions analysis
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9.5
Determining the Sample Size
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Procedure
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Procedure
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Comparing Two Population Variances: Independent Sampling (Optional)
9.6
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Figure 9.16 An F-distribution with 7 numerator and 9 denominator degrees of freedom
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Table 9.8
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Figure 9.17 An F-distribution for 1 = 7 and 2 = 9 df; = .05
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Table 9.9
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Figure 9.18 MINITAB summary statistics and F-test for mice weights
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Figure 9.19 Rejection region for Example 9.10
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Procedure
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Procedure
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Definition
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Table 9.10
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Figure 9.20 SAS F-test for testing assumption of equal variances
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Procedure