In a statistical study, two events M M\,M and N N\,N are such that P(M)=0.45P(M) = 0.45P(M)=0.45, P(M∩N)=0.15P(M \cap N) = 0.15P(M∩N)=0.15 and P(M∣N)=0.6P(M|N) = 0.6P(M∣N)=0.6.
Find P(N)P(N)P(N).
Find P(M∪N)P(M \cup N)P(M∪N).
Find P(N∣M′)P(N|M')P(N∣M′).
164 exam-style questions on WJEC A Level Maths 4.1 Probability (A-level only), covering 4.1.1 Probability (A-level only), 4.1.2 Probability (A-level only), and 4.1.3 Probability (A-level only). Each one has a worked solution and a mark scheme showing where the marks go.