33 - Confidence interval for proportions

How confident are you? What do you mean?

Practice

Chapter 19 #5, 17, Read pages 439-442

Vocabulary

Standard error, confidence interval

Study Questions

1. Explain what “95% confidence” means?
2. Why not set up a “100% confidence” interval?
3. How do the confidence intervals help us say something about the world at large?

Resources

1. APP: Applet Link
2. Slide Deck: 33-Confidence-interval-for-proportions.pdf