Sunday, January 1, 2012

Chapter 19 Guiding Questions

Answer the following questions:

1) Explain what a confidence interval is.

2) What does it mean to be "95% Confident"?

3) What statement should we make when talking about confidence intervals?

4) What is a margin of error?

5) What is the formula for finding confidence intervals for sample proportions?

6) If we want to be more confident, does the margin of error need to be larger or smaller? Why?

7) What is a critical value?

8) What assumptions must be made and what conditions must be met in order to use confidence intervals for sample proportions?


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