Question
Answer Key
Worked Solution
RI/2021/JC2/Prelim/P2/Q05
For events \(A\) and \(B\) it is given that \(P (A)=0.3, P (B \mid A)=0.4\) and \(P \left(A^{\prime} \cap B^{\prime}\right)=0.15\). Find
(i) \(P (A \cup B)\),
[1]
(ii) \(P (B)\),
[3]
(iii) \(P \left(A \mid B^{\prime}\right)\).
[2]
(i) $0.85$
(ii) $0.67$
(iii) $\frac {6}{11}$
