After you calculate the sample size needed to estimate a population proportion to within 0.05, your statistics lecturer tells you the maximum allowable error must be reduced to just 0.025. If the original calculation led to a sample size of 400, the sample size will now have to be: $\begin{array}{|l|l|}
\hline\text { A. } & 800 . \
\hline \text { B. } & 200 . \
\hline \text { C. } & 4000 . \
\hline \text { D. } & 1600 \
\hline
\end{array}$

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The Answer of After you calculate the sample size needed to estimate a population proportion to within 0.05, your statistics lecturer tells you the maximum allowable error must be reduced to just 0.025. If the original calculation led to a sample size of 400, the sample size will now have to be: $\begin{array}{|l|l|}
\hline\text { A. } & 800 . \
\hline \text { B. } & 200 . \
\hline \text { C. } & 4000 . \
\hline \text { D. } & 1600 \
\hline
\end{array}$

After You Calculate the Sample Size Needed to Estimate a Population