The probability that a family owns a laptop is 0.68; that it also owns a desktop is 0.56. If the probability that it owns <strong>BOTH</strong> is 0.48, then what is the probability that a randomly selected family owns a laptop or a desktop?
- A. 0.80
- B. 0.76 ✓
- C. 0.36
- D. 0.28
Correct Answer: B. 0.76
Explanation
Using the formula for the union of two sets, P(L \cup D) = P(L) + P(D) - P(L \cap D). Substituting the given values: P(L \cup D) = 0.68 + 0.56 - 0.48 = 1.24 - 0.48 = 0.76.
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