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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

13.4 Testing Categorical Probabilities: One-Way Table

The US government reports that the percent of uninsured in the country is 13%. The percent who purchase health insurance on their own is 20%, and the percent who purchase insurance through their employer is 67%. A random survey of Americans reveals the set of results below. Does the data provide evidence to contradict the government’s claim?
uninsured              private             employer
     315                       252                   1533
 

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