and are mutually exclusive events with and . Find .
Answer and explanation
Correct answer: C. 0.75
- Step 1: Mutually exclusive events cannot happen together, so . Step 2. . Answer: 0.75. Why not the others: 0.135 is , the intersection for independent events, 0.615 subtracts that product, which is the union for independent events, and 0.15 is the difference of the two probabilities.
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