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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
13.6 Testing Categorical Probabilities: Two-Way (Contingency) Table
Use the table below, which is from a study on vitamin C intake and the common cold, to test if vitamin C intake and colds are independent.
Status Vitamin C Group Placebo Group Total
Children free of colds 21 11 32
Children developing colds 36 35 71
Total 57 46 103
STATS1
STATS2
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