The sample size that guarantees all estimates of proportions will meet the margin of error requirements is computed using a planning value of p equal to _____.
A) .01
B) .50
C) .51
D) .99

Question

Quizplus · Accepted Answer

The planning value of p equal to .50 is used because it provides the maximum possible sample size, ensuring that the margin of error requirements will be met for any proportion. This is because the variance of a binomial distribution (which is used to model proportions) is maximized when p = 0.5, leading to the largest sample size calculation to meet a specific margin of error.

The Sample Size That Guarantees All Estimates of Proportions Will