I need some help with my epidemiology assignment. It has 5 questions, I have read the material this week but I still need some help

Here is the first question.

Based on the information in this video (frontline – the trouble with chicken), Meridian Diagnostics Inc. decided to produce an enzyme-linked immunosorbent assay (EIA test kit) to screen for presence of Salmonella heidelberg, so patients who became sickened, could be diagnosed quickly and treated. Patient blood samples could be tested for presence of the S. heidelberg bacteria as opposed to other Genera and species of bacteria.

• With this information, by constructing a 2-by-2 table, calculate the predictive-value positive and predictive-value negative of the EIA in a hypothetical population of 1,000,000 blood donors. Using a separate 2-by-2 table, calculate PVP (Positive predictive value) and PVN  (predictive value negative)for a population of 1000 ill patients. Assume that the actual prevalence of S. heidelberg among blood donors is 0.04% (0.0004) and that of people who ate Foster’s chicken is 10.0% (0.10).