0 Question 21 v Suppose that 12% of a population carries antibodies to a Virus. For a research project, you need 7 people with antibodies to the virus. How many people must you test to be 95% certain of getting at least 7 people with the antibodies? r This problem will need some trial and error...you are trying to find \"It so that P(X L3\") 7) = 0.90. Using the Rule of Complements, you can restate this as: P(X *5: 6) = 0.05 Now you can use trial and error with p = 0.12 and different values of n in the binomialcdf command until you get the probability to drop below 0.054