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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 5

Historically, the average height for males was believed to be 68 inches.  A doctor believes the average height has increased over the last 100 years.  He claims the average male is now 70 inches tall.  A random sample of 50 men had an average height of 68.9 inches and a standard deviation of 2.8 inches.  Use a 10% significance level and the p-value method to test the doctor’s claim. 

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