Question
Suppose that we, as consumers, have the option of having an AIDS vaccine produced by a monopoly or of not having the vaccine produced at all. Under which option would we be better off? Why?
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We have two options: - Option A: An AIDS vaccine is produced by a monopoly. - Option B: No AIDS vaccine is produced at all. Show more…
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In order for a vaccine to be effective, it should reduce a person's chance of acquiring a disease. Consider a hypothetical vaccine for malaria-a tropical disease that kills between 1.5 and 2.7 million people every year. $^{20}$ Suppose the vaccine is tested with 500 volunteers in a village who are malaria free at the beginning of the trial. Two hundred of the volunteers will get the experimental vaccine and the rest will not be vaccinated. Suppose that the chance of contracting malaria is $10 \%$ for those who are not vaccinated. Construct a two-way table to show the results of the experiment if: (a) The vaccine has no effect. (b) The vaccine cuts the risk of contracting malaria in half.
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