In a certain region of the country it is known that the probability of selecting an adult over 40 years of age with cancer is 0.05. If the probability of a doctor correctly diagnosing a person with cancer as having the disease is 0.78 and the probability of incorrectly diagnosing a person without cancer as having the disease is 0.06, what is the probability that an adult over 40 years of age was correctly diagnosed as healthy? That is, what is P(Negative | Healthy)? Hint: set this up as a contingency table.