Chapter 9 Inferences Based on Two Samples Confidence
Chapter 9 Inferences Based on Two Samples Confidence Intervals and Tests of Hypotheses Copyright © 2013 Pearson Education, Inc. All rights reserved
9. 1 Identifying the Target Parameter Copyright © 2013 Pearson Education, Inc. All rights reserved
Procedure 9 - 3 Copyright © 2013 Pearson Education, Inc. . All rights reserved.
9. 2 Comparing Two Population Means: Independent Sampling Copyright © 2013 Pearson Education, Inc. All rights reserved
Table 9. 1 9 - 5 Copyright © 2013 Pearson Education, Inc. . All rights reserved.
Figure 9. 1 SPSS analysis of diet study data 9 - 6 Copyright © 2013 Pearson Education, Inc. . All rights reserved.
Figure 9. 2 Sampling distribution of 9 - 7 Copyright © 2013 Pearson Education, Inc. . All rights reserved.
Definition 9 - 8 Copyright © 2013 Pearson Education, Inc. . All rights reserved.
Procedure 9 - 9 Copyright © 2013 Pearson Education, Inc. . All rights reserved.
Procedure 9 - 10 Copyright © 2013 Pearson Education, Inc. . All rights reserved.
Definition 9 - 11 Copyright © 2013 Pearson Education, Inc. . All rights reserved.
Figure 9. 3 Rejection region for Example 9. 2 9 - 12 Copyright © 2013 Pearson Education, Inc. . All rights reserved.
Figure 9. 4 The observed significance level for Example 9. 2 9 - 13 Copyright © 2013 Pearson Education, Inc. . All rights reserved.
Figure 9. 5 Assumptions for the two-sample t; (1) normal populations; (2) equal variances 9 - 14 Copyright © 2013 Pearson Education, Inc. . All rights reserved.
Procedure 9 - 15 Copyright © 2013 Pearson Education, Inc. . All rights reserved.
Procedure 9 - 16 Copyright © 2013 Pearson Education, Inc. . All rights reserved.
Definition 9 - 17 Copyright © 2013 Pearson Education, Inc. . All rights reserved.
Table 9. 2 9 - 18 Copyright © 2013 Pearson Education, Inc. . All rights reserved.
Figure 9. 6 SAS printout for Example 9. 4 9 - 19 Copyright © 2013 Pearson Education, Inc. . All rights reserved.
Figure 9. 7 Normal probability plots for Example 9. 4 9 - 20 Copyright © 2013 Pearson Education, Inc. . All rights reserved.
Figure 9. 8 MINITAB box plots for Example 9. 4 9 - 21 Copyright © 2013 Pearson Education, Inc. . All rights reserved.
Procedure 9 - 22 Copyright © 2013 Pearson Education, Inc. . All rights reserved.
Procedure 9 - 23 Copyright © 2013 Pearson Education, Inc. . All rights reserved.
Figure SIA 9. 1 MINITAB comparison of two price change means 9 - 24 Copyright © 2013 Pearson Education, Inc. . All rights reserved.
Figure SIA 9. 2 MINITAB comparison of two Trading volume means 9 - 25 Copyright © 2013 Pearson Education, Inc. . All rights reserved.
9. 3 Comparing Two Population Means: Paired Difference Experiments Copyright © 2013 Pearson Education, Inc. All rights reserved
Table 9. 3 9 - 27 Copyright © 2013 Pearson Education, Inc. . All rights reserved.
Figure 9. 9 MINITAB printout of an invalid analysis of reading test scores in 9. 3 9 - 28 Copyright © 2013 Pearson Education, Inc. . All rights reserved.
Table 9. 4 9 - 29 Copyright © 2013 Pearson Education, Inc. . All rights reserved.
Figure 9. 10 Rejection region for Example 9. 4 9 - 30 Copyright © 2013 Pearson Education, Inc. . All rights reserved.
Figure 9. 11 MINITAB paired difference analysis of reading test scores 9 - 31 Copyright © 2013 Pearson Education, Inc. . All rights reserved.
Procedure 9 - 32 Copyright © 2013 Pearson Education, Inc. . All rights reserved.
Procedure 9 - 33 Copyright © 2013 Pearson Education, Inc. . All rights reserved.
Definition 9 - 34 Copyright © 2013 Pearson Education, Inc. . All rights reserved.
Definition 9 - 35 Copyright © 2013 Pearson Education, Inc. . All rights reserved.
Table 9. 5 9 - 36 Copyright © 2013 Pearson Education, Inc. . All rights reserved.
Figure 9. 12 SAS analysis of salary differences 9 - 37 Copyright © 2013 Pearson Education, Inc. . All rights reserved.
Figure 9. 13 SPSS analysis of salaries, assuming independent samples 9 - 38 Copyright © 2013 Pearson Education, Inc. . All rights reserved.
Procedure 9 - 39 Copyright © 2013 Pearson Education, Inc. . All rights reserved.
9. 4 Comparing Two Population Proportions: Independent Sampling Copyright © 2013 Pearson Education, Inc. All rights reserved
Table 9. 6 9 - 41 Copyright © 2013 Pearson Education, Inc. . All rights reserved.
Definition 9 - 42 Copyright © 2013 Pearson Education, Inc. . All rights reserved.
Procedure 9 - 43 Copyright © 2013 Pearson Education, Inc. . All rights reserved.
Procedure 9 - 44 Copyright © 2013 Pearson Education, Inc. . All rights reserved.
Definition 9 - 45 Copyright © 2013 Pearson Education, Inc. . All rights reserved.
Table 9. 7 9 - 46 Copyright © 2013 Pearson Education, Inc. . All rights reserved.
Figure 9. 14 Rejection region for Example 9. 6 9 - 47 Copyright © 2013 Pearson Education, Inc. . All rights reserved.
Figure 9. 15 MINITAB output for test of two proportions 9 - 48 Copyright © 2013 Pearson Education, Inc. . All rights reserved.
Figure SIA 9. 3 MINITAB comparison of two proportions analysis 9 - 49 Copyright © 2013 Pearson Education, Inc. . All rights reserved.
9. 5 Determining the Sample Size Copyright © 2013 Pearson Education, Inc. All rights reserved
Procedure 9 - 51 Copyright © 2013 Pearson Education, Inc. . All rights reserved.
Procedure 9 - 52 Copyright © 2013 Pearson Education, Inc. . All rights reserved.
9. 6 Comparing Two Population Variances: Independent Sampling (Optional) Copyright © 2013 Pearson Education, Inc. All rights reserved
Figure 9. 16 An F-distribution with 7 numerator and 9 denominator degrees of freedom 9 - 54 Copyright © 2013 Pearson Education, Inc. . All rights reserved.
Table 9. 8 9 - 55 Copyright © 2013 Pearson Education, Inc. . All rights reserved.
Figure 9. 17 An F-distribution for u 1 = 7 and u 2 = 9 df; a =. 05 9 - 56 Copyright © 2013 Pearson Education, Inc. . All rights reserved.
Table 9. 9 9 - 57 Copyright © 2013 Pearson Education, Inc. . All rights reserved.
Figure 9. 18 MINITAB summary statistics and F-test for mice weights 9 - 58 Copyright © 2013 Pearson Education, Inc. . All rights reserved.
Figure 9. 19 Rejection region for Example 9. 10 9 - 59 Copyright © 2013 Pearson Education, Inc. . All rights reserved.
Procedure 9 - 60 Copyright © 2013 Pearson Education, Inc. . All rights reserved.
Procedure 9 - 61 Copyright © 2013 Pearson Education, Inc. . All rights reserved.
Definition 9 - 62 Copyright © 2013 Pearson Education, Inc. . All rights reserved.
Table 9. 10 9 - 63 Copyright © 2013 Pearson Education, Inc. . All rights reserved.
Figure 9. 20 SAS F-test for testing assumption of equal variances 9 - 64 Copyright © 2013 Pearson Education, Inc. . All rights reserved.
Procedure 9 - 65 Copyright © 2013 Pearson Education, Inc. . All rights reserved.
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