Description
Of all murder victoms in 2010 whose relation to the offender was known, 28.8% were killed by a family member and 53% by an acquaintance. The rest were killed by a stranger. What is the probability that a randomly selected murder victom was killed by a stranger?
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Explanation & Answer
We have used basic rule of conditional probability
P(A)=family member=28.8%=0.288
P(B)=acquaintance=53%=0.53
P(AUB)=P(A)+P(B)=0.288+0.53=0.818
probability of murder killed by stranger=1-P(AUB)
probability of murder killed by stranger=1-0.818
Probability of murder killed by stranger=0.182
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