- In a survey, people were asked if they use a computer every day.
Of those people under 50 years old, \(80 \%\) said they use computer every day. Of those people aged 50 or more, \(55 \%\) said they use computer every day.
The proportion of people in the survey under 50 years old is \(p\)
- Draw a tree diagram to represent this information.
In the survey, 70\% of all people said they use computer every day.
- Find the value of \(p\)
One person is selected at random. Given that this person uses a computer every day,
- find the probability that this person is under 50 years old.
\href{http://PhysicsAndMathsTutor.com}{PhysicsAndMathsTutor.com}