blem 2 In any given year a person may or may not get the flu Past records show that if a person has the flu one year then due to a build up of antibodies there is a 90 chance that they will not get the flu in the following year If they don t have a flu in a given year then there is a 20 chance that they will get the flu the following year a If a person does not have the flu one year what is the probability that they will also not have the flu 2 years later b In the long run what proportion of years does a person not have the flu