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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 119

Example 119:  Suppose that after taking a random sample of airline passengers we have the following data:  n = 36, sample mean is 200 lbs, and the population standard deviation  (known from previous studies) is 33.3.  Use the CLT, the null hypothesis from above, and the data above to create a test statistic that has a Z-distribution. 

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