1 question- Biostatistics- determining sample size

First, do the computations necessary to answer the question regarding sample size. Then think about how a public health administrator might go about building a sample of the necessary size.

For your initial post in this discussion, share your answer for sample size, and describe briefly how you arrived at it. Then explain how you might make the case for conducting (or not conducting) the research involved.

9. How many stomach cancer patients and controls would be required to estimate the difference in proportions of patients with sufficient concentrations of plasma antioxidant vitamins with a margin of error not exceeding 5% using a 95% CI? The data in Table 8-2 were reported recently from a similar study investigating The sufficiency of plasma antioxidant vitamins in throat cancer patients.

Table 8-2