34 - Margin of error

What is this battle of certainty vs. precision when regarding the margin of error?

Practice

Chapter 19 # 13, 29, Read pages 443-452

Vocabulary

critical value, margin of error, one proportion z-interval

Study Questions

  1. Explain what the margin of error means.
  2. How is margin of error impacted by the sample size?
  3. How do you determine how large a sample to take when planning a study?

Resources

  1. Slide Deck: 34-Margin-of-error.pdf