Six hundred accidents that occurred on a Saturday night were analyzed. Two items

Question

Six hundred accidents that occurred on a Saturday night were analyzed. Two items noted were the number of vehicles involved and whether alcohol played a role in the accident. The numbers are shown below: By making a probability table, answer to the following questions: a. What proportion of accidents involved more than one vehicle? b. What proportion of accidents involved alcohol and single vehicle? c. What proportion of accidents involved alcohol or a single vehicle? d. Given alcohol was involved, what proportion of accidents involved a single vehicle? e. If multiple vehicles were involved, what proportion of accidents involved alcohol?

Explanation / Answer

a) proportion =(350+125)/600=0.7917

b) proportion =75/600=0.125

c) proportion = (250+50)/600=0.5

d)proportion =75/250=0.3

e)proportion =(125+50)/(350+125)=0.3684

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