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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 128

Example 128: In previous tests, baseballs were dropped 24ft onto a concrete surface, and they bounced an average of 92.84 inches.  In a test of a sample of 28 new balls, the bounce heights had a mean of 92.67 inches and a standard deviation of 1.79 inches.  Use a 5% level of significance to test the claim that the new balls have a mean bounce height different from 92.84.

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