Answer: P(A) ≤ P(B).
- A P(A) = P(B) always
- B P(A) + P(B) = 1
- C P(A) ≤ P(B)
- D P(A) ≥ P(B)
Correct answer: C. P(A) ≤ P(B)
Explanation: Every outcome in A also lies in B, so B carries at least as much probability - monotonicity of probability.
Concept context
Random experiments, sample space, events, and the axiomatic approach to probability