Problem 12 of 7
Compute P(A or B) for overlapping events from P(A)=0.8, P(B)=0.6, P(A and B)=0.5.
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add probabilities and subtract intersection.
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Use addition rule P(A or B)=P(A)+P(B)-P(A and B).
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Solution
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1. Add P(A) and P(B).
2. Subtract P(A and B) to avoid double-counting overlap.
3. State P(A or B).
Use the worked steps, then substitute the final answer back into the original relationship to confirm it satisfies the prompt.
Adding P(A) and P(B) without subtracting overlap for overlapping events.