Calculate conditional probability
In a tutor group, \(18\) students study Chemistry and \(6\) of those students also study Biology. Given that a student studies Chemistry, find the probability that the student also studies Biology.
Worked practice: conditional probability
Restrict the sample space to the given condition before writing the probability.
Write a full answer
Now write the response in full, in your own words — this is what the exam asks for. The AI marks it on the same moves you built above (focus, evidence, technique, judgement) and gives feedback on reasoning, evidence, and expression.