Chapter 10 Statistical Inference About Means and Proportions with Two Populations

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Chapter 10 Statistical Inference About Means and Proportions with Two Populations

Learning Objectives 1. Be able to develop interval estimates and conduct hypothesis tests about the difference between two population means whenandare known. 2. Know the properties of the sampling distribution of . 3. Be able to use the t distribution to conduct statistical inferences about the difference between two population means whenandare unknown. 4. Learn how to analyze the difference between two population means when the samples are independent and when the samples are matched. 5. Be able to develop interval estimates and conduct hypothesis tests about the difference between two population proportions. 6. Know the properties of the sampling distribution of .

Solutions: 1. a. = 13.6 - 11.6 = 2 b. 1.645

2  .98 (1.02 to 2.98)…...

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