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$\begin{array}{crccc}\hline{\text { The assumed sigma }=8.0573} \\\text { Variable } & \mathrm{N} & \text { Mean } & \text { SE Mean } & 95 \% \mathrm{CI} \\\mathrm{x} & 52 & 53.563 & 1.1173 & (51.373,55.753) \\\hline\end{array}$

Find the sample size needed so that the 99% confidence interval will have a margin of error of

1.1.

A) 357

B) 291

C) 207

D) 15

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