Statisticshard · Past Paper
If P(A) = 0.4, P(B) = 0.5 and P(A intersection B) = 0.2, find P(A' intersection B').
A0.3
B0.7
C0.1
D0.9
✓ Correct Answer: A — 0.3
P(A or B) = 0.4+0.5-0.2 = 0.7. P(A' and B') = 1 - P(A or B) = 1 - 0.7 = 0.3.
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