Statisticshard · Past Paper
If P(A) = 0.5, P(B) = 0.4 and events are mutually exclusive, find P(not A and not B).
A0.9
B0.1
C0
D0.5
✓ Correct Answer: B — 0.1
P(A or B) = 0.5+0.4=0.9. P(not A and not B) = 1 - 0.9 = 0.1.
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