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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

Assumptions for Chi-Squared Test

13.2 Checking the Assumptions for a Chi-Square Goodness-of-Fit Test

Researchers sample a random selection of divorced workers at a corporation and test if the percentage of divorces that involve blue collar workers is 50%; white collar workers is 45%; and executives is 5% . Does the data collected below fit the sample size requirement for a X2 one-way test?
           Blue-collar             White-collar             Executives
                  50                              35                             4
 

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