alleryFor two events, P(A) = 0.44, P(B) = 0.46 and P(A and B) = 0.16. Then P(A or B) is:
A0.74 in total
B0.90 in total
C0.60 in total
D0.86 in total
Answer & Solution
Correct answer: A. 0.74 in total
1. The addition rule: P(A or B) = P(A) + P(B) - P(A and B).
2. Substitute: 0.44 + 0.46 - 0.16.
3. P(A or B) = 0.74.
_Source: syllabus Mathematics, Ch 14 'Probability' (kemh114)_
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