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Course Documents

Chapter 1 - Intro

Chapter 2 - Methods for Describing Sets of Data

Chapter 3 - Probability

Chapter 4 - Discrete Random Variables

Chapter 5 - Normal Random Variables

Chapter 6 - Sampling Distributions

Chapter 7 - Confidence Intervals

Chapter 8 - Tests of Hypothesis: One Sample

Chapter 9 - Confidence Intervals and Hypothesis Tests: Two Samples

Sample Exam I: Chapters 1 & 2

Sample Exam II: Chapters 3 & 4

Sample Exam III: Chapters 5 & 6

Sample Exam IV: Chapters 7 & 8

Problem 2

9.9 Inference Procedures to Compare Two Population Proportions: Independent Sampling

Which sex exercises more?  A recent poll of 1000 men revealed that 390 of them exercise at least three days per week.  A similar poll of 800 women revealed that revealed that 256 of them exercised at least three days per week.  Use a 2.5% significance level to test the claim that the proportion of men exercise three or more days per week is greater than the proportion of women.

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