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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

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

Education majors are the group of students with the lowest quantitative reasoning scores on the GRE; Engineering majors have the highest quantitative reasoning scores. A large sample confidence interval between quantitative GRE scores for engineering majors and education majors was created. The result was as follows :

113.99 < μ_{eng} - μ_{edu} < 260.01. Is there a significant difference?