Which Is the Formula of the Necessary Sample Size (N) $n=p(1-p)^{\sigma} p+1$

Which is the formula of the necessary sample size (n) , where p is the proportion of the population having the attribute and p is the standard error of the proportion?

A) $n=p(1-p) ^{\sigma} p+1$
B) $n=p(1-p) /{ }^{\sigma} p 2+1$
C) $n=\mathrm{p}(1-\mathrm{p}) /{ }^{\sigma} \mathrm{p} 2$
D) $n=p(1+p) /{ }^{\sigma} p 2+1$

Correct Answer:

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