Which two quantities are needed to estimate the standard error of the proportions toward the further estimation of confidence intervals for proportions?
A)Sample mean and sample standard deviation
B)Population mean and population standard deviation
C)Sample proportion and sample size
D)Population proportion and population size

Question

Quizplus · Accepted Answer

The standard error of the proportion is calculated using the formula SE = sqrt[(p(1-p))/n], where p is the sample proportion and n is the sample size. Therefore, we need both the sample proportion and sample size to estimate the standard error and subsequently compute confidence intervals for proportions. The other options do not provide the necessary information for this calculation.

Which Two Quantities Are Needed to Estimate the Standard Error