If no estimate of p exists when determining the sample size for a confidence interval for a
proportion, we can use .5 in the formula to get a value for n.

Question

Quizplus · Accepted Answer

Using 0.5 for p in the formula to determine sample size for a confidence interval for a proportion maximizes the sample size estimate, ensuring the sample is large enough for a wide range of possible true proportions.

If No Estimate of P Exists When Determining the Sample