Answer: 0.3.
- A 0.15
- B 0.3
- C 0.5
- D 0.8
Correct answer: B. 0.3
Explanation: The intersection cannot exceed either event, so P(A ∩ B) ≤ min(0.5, 0.3) = 0.3, attained when B ⊆ A.
Concept context
Random experiments, sample space, events, and the axiomatic approach to probability