Statisticseasy · Past Paper
For two mutually exclusive events A and B, which formula is correct?
AP(A or B) = P(A) + P(B)
BP(A or B) = P(A) * P(B)
CP(A or B) = P(A) - P(B)
DP(A or B) = P(A) + P(B) - P(A and B)
✓ Correct Answer: A — P(A or B) = P(A) + P(B)
Mutually exclusive events cannot happen at the same time, so P(A and B) = 0.
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