Question

Which of the following is NOT true of confidence interval estimates of the difference between two population proportions?

A) The confidence interval uses a standard deviation based on estimated values of the population proportions.
B) If a confidence interval estimate of p1-p2 does not include 0, we have evidence suggesting that p1 and p2 have different values.
C) A confidence interval is used to estimate the difference between two population proportions.
D) A confidence interval is used to test a claim about two population proportions.

Answer 1

Option D is false; a confidence interval is not used to test a claim about two population proportions.

Step-by-step explanation:

Of the options provided, option D is NOT true of confidence interval estimates of the difference between two population proportions.

A confidence interval is used to estimate the difference between two population proportions, as stated in option C.

If a confidence interval estimate of p1-p2 does not include 0, we have evidence suggesting that p1 and p2 have different values, as stated in option B.

The confidence interval uses a standard deviation based on estimated values of the population proportions, as stated in option A.

Therefore, option D, which claims that a confidence interval is used to test a claim about two population proportions, is NOT true.