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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 4

9.1 Z-Interval to Compare Two Population Means: Independent Samples

A large sample confidence interval for the true average difference between quantitative GRE scores for engineering majors and physical science majors was created.  The result was as follows:-45.09 < μe - μp < 95.09.  Is there a significant difference?  Which group had the larger sample mean?

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