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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

Graphing Calculator Example

9.8 Confidence Interval to Compare Two Population Means: Matched-Pair Experiments

A researcher suspects that men, if given the chance, would lie about their heights. She suspects that they would try to say they are taller than they really are. To test this, the researcher first asks the male subjects to report their heights, and then she actually measures them. The subjects do not know they will be measured. Use the data below to construct a 95% confidence interval for the true between measured heights and reported heights. Is zero in the interval? If so, what does this tell us?
Reported height     68     71    63   70    71   60     65    64  54      63   66   72
Measured height 67.9 69.9 64.9 68.3 70.3 60.6 64.5 67  55.6  74.2 65  70.8
 

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