The Answer to the Question
is below this banner.
Here's the Solution to this Question
Let be the event that a person is infected by flu virus. Its probability is . is the event that a person is not infected with its probability,
Let be an event representing a person showing signs and is the event that an individual is symptoms free.
We are given the following conditional probabilities.
We can represent these information in the tree diagram below. The respective intersection probabilities are indicated on the right of the tree diagram