Chapter 12: Inference for Proportions

 

 Calculator Skills:

         1-PropZTest

         1-PropZInt

         2-PropZTest

         2-PropZInt
 

12.1  Inference for a Population Proportion (pp.684-701)

1.      In statistics, what is meant by a sample proportion?

 

2.      Give the mean and standard deviation for the sampling distribution of ?

 

3.      How do you calculate the standard error of ?

 

4.      What assumptions must be met in order to use z procedures for inference about a proportion?

 

 

5.      Describe how to construct a level C confidence interval for a population proportion.

 

6.      For a one-sample hypothesis test where , what is the z test statistic?

 

 

7.      What formula is used to determine the sample size necessary for a given margin of error?

 


12.2  Comparing Two Proportions (pp.702-722)

1.      Give the mean and standard deviation for the sampling model of .

 

2.      How do you calculate the standard error of ?

 

 

3.      What assumptions must be met in order to use z procedures for inference about two proportions?

 

 

4.      Describe how to construct a level C confidence interval for the difference between two proportions, .

 

 

5.      For a two-sample hypothesis test where , what is the z test statistic?