The expected value of the difference between two sample proportions is the difference between their corresponding population proportions.

Question

Quizplus · Accepted Answer

This statement is true. The expected value of the difference between two sample proportions is equal to the difference between their corresponding population proportions, under the assumption of unbiased sampling and independence between the samples. This is a result of the properties of the sampling distribution of sample proportions and the law of large numbers.

The Expected Value of the Difference Between Two Sample Proportions