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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

Example 144

Example 144 In 1995, the American Cancer Society randomly sampled 1500 adults of which 555 smoked.  In 2005, they surveyed 1750 adults and found that 578 of them smoked.  At the 5% level of significance test the claim that the proportion of smokers in the population decreased over the ten year period.  What is the p-value for the test?

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