APFIVE Standard Error of a Sample Proportion
For a simple random sample of size $$n$$ from a population with a true proportion $$p$$, what is the formula for the standard error of the sample proportion, $$\hat{p}$$?
A
$$\sqrt{\frac{p(1-p)}{n}}$$
B
$$\frac{p(1-p)}{n}$$
C
None of the above formulas correctly represents the standard error of a sample proportion.
D
$$\sqrt{\frac{n(p)(1-p)}{p}}$$
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