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Unit 4: Guesstimating and Hypothesizing with Confidence
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Unit 4: Guesstimating and Hypothesizing with Confidence
by Deborah J. Rumsey
Statistics All-in-One For Dummies
Cover
Title Page
Copyright
Introduction
Unit 1: Getting Started with Statistics
Unit 2: Number-Crunching Basics
Unit 3: Distributions and the Central Limit Theorem
Unit 4: Guesstimating and Hypothesizing with Confidence
Unit 5: Statistical Studies and the Hunt for a Meaningful Relationship
Appendix : Tables for Reference
Index
About the Author
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Prev
Previous Chapter
Chapter 12: Sampling Distributions and the Central Limit Theorem
Next
Next Chapter
Chapter 13: Leaving Room for a Margin of Error
Unit 4
Guesstimating and Hypothesizing with Confidence
In This Unit …
Chapter 13: Leaving Room for a Margin of Error
Seeing the Importance of that Plus or Minus
Finding the Margin of Error: A General Formula
Determining the Impact of Sample Size
Practice Questions Answers and Explanations
Whaddya Know? Chapter 13 Quiz
Answers to Chapter 13 Quiz
Chapter 14: Confidence Intervals: Making Your Best Guesstimate
Not All Estimates Are Created Equal
Linking a Statistic to a Parameter
Getting with the Jargon
Interpreting Results with Confidence
Zooming In on Width
Choosing a Confidence Level
Factoring In the Sample Size
Counting On Population Variability
Calculating a Confidence Interval for a Population Mean
Figuring Out What Sample Size You Need
Determining the Confidence Interval for One Population Proportion
Creating a Confidence Interval for the Difference of Two Means
Estimating the Difference of Two Proportions
Spotting Misleading Confidence Intervals
Practice Questions Answers and Explanations
Whaddya Know? Chapter 14 Quiz
Answers to Chapter 14 Quiz
Chapter 15: Claims, Tests, and Conclusions
Setting Up the Hypotheses
Gathering Good Evidence (Data)
Compiling the Evidence: The Test Statistic
Weighing the Evidence and Making Decisions: p-Values
Making Conclusions
Assessing the Chance of a Wrong Decision
Practice Questions Answers and Explanations
Whaddya Know? Chapter 15 Quiz
Answers to Chapter 15 Quiz
Chapter 16: Commonly Used Hypothesis Tests: Formulas and Examples
Testing One Population Mean
Handling Small Samples and Unknown Standard Deviations: The
t
-Test
Testing One Population Proportion
Comparing Two (Independent) Population Averages
Testing for an Average Difference (The Paired
t
-Test)
Comparing Two Population Proportions
Practice Questions Answers and Explanations
Whaddya Know? Chapter 16 Quiz
Answers to Chapter 16 Quiz
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