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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 2

A professor claims that it takes the average student no more than 40 minutes to finish his final exam.  A random selection of 39 students was timed while taking the final.  The students had an average completion time of 41.6 minutes and a standard deviation of 6 minutes.  Use a 1% significance level to test the professor’s claim. Give the practical interpretation of the outcome of the test.

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