3.11.B—Justify a claim based on a confidence interval for the difference between two population proportions

Justify a claim based on a confidence interval for the difference between two population proportions.

• A confidence interval for the difference between two population proportions provides an interval of values that may provide convincing evidence to support a particular claim about the difference between the two population proportions. For example, if the interval contains 0, then there is insufficient evidence to conclude there is a difference between the two population proportions. If the interval does not contain 0, there is sufficient evidence to conclude there is a difference between the two population proportions. Inference for Categorical Data: Proportions UNIT 3 106