Enjoy learning Statistics Online! Please be sure to share and subscribe to our YouTube channel.
ASK THE PROFESSOR FORUM
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 heart disease and smoking, and a 0.005 significance level to test if smoking and heart disease are related.
Risk Factor Heart Disease No Heart Disease Total
Smoker 25 10 35
Nonsmoker 14 51 65
Total 39 61 100
STATS1
STATS2
HOME