7. In a large company,
78\% of employees are car owners,
\(30 \%\) of these car owners are also bike owners,
85\% of those who are not car owners are bike owners.
- Draw a tree diagram to represent this information.
An employee is selected at random.
- Find the probability that the employee is a car owner or a bike owner but not both.
Another employee is selected at random.
Given that this employee is a bike owner,
- find the probability that the employee is a car owner.
Two employees are selected at random.
- Find the probability that only one of them is a bike owner.