3.10.D—Calculate the standard error and margin of error for estimating the difference between two population…

Calculate the standard error and margin of error for estimating the difference between two population proportions. Inference for Categorical Data: Proportions UNIT 3 104

• The standard error (SE ) for the difference between two population proportions is SE pp n pp npp   12 1 1 2 2 1211 .
• For the difference between two population proportions, the margin of error is the critical value z times the standard error (SE) of the difference between the two proportions, which equals z pp n pp n   1 1 2 2 1211 .