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Alcohol a contributing factor

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Reference no: EM133266061

Problem:

(a) A researcher recently surveyed 400 randomly chosen accidents that occurred on a Saturday evening. In the following table, each accident is classified by the number of vehicles involved and if alcohol contributed to the accident:

  Number of Vehicles Involved
Alcohol a factor One Two Three or more
Yes 50 100 20
No 25 175 30

(ii) What proportion of accidents involved more than one vehicle with alcohol a contributing factor?

Reference no: EM133266061

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