Two Surgical Procedures Are Widely Used to Treat a Certain

Multiple Choice

Two surgical procedures are widely used to treat a certain type of cancer. To compare the success rates of thetwo procedures, random samples of the two types of surgical patients were obtained and the numbers ofpatients who showed no recurrence of the disease after a 1-year period were recorded. The data are shown inthe table. How large a sample would be necessary in order to estimate the difference in the true success ratesto within $\begin{array}{lcc}\hline & \mathrm{n} & \text { Number of Successes } \\\hline \text { Procedure A } & 100 & 73 \\\text { Procedure B } & 100 & 92 \\\hline\end{array}$

A) $\mathrm{n}_{1}=\mathrm{n}_{2}=104$
B) $\mathrm{n}_{1}=\mathrm{n}_{2}=73$
C) $\mathrm { n } _ { 1 } = \mathrm { n } _ { 2 } = 53$
D) $\mathrm { n } _ { 1 } = \mathrm { n } _ { 2 } = 192$ 0.10 with 95% reliability?