SCENARIO 4-1 Mothers Against Drunk Driving is a very visible group whose focus is to educate the public about the harm caused by drunk drivers.A study was recently done that emphasized the problem we all face with drinking and driving.Four 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:
-Referring to Scenario 4-1, given that alcohol was not involved, what proportion of the accidents were single vehicle?
A)50/75 or 66.67%
B)25/230 or 10.87%
C)50/170 or 29.41%
D)25/75 or 33.33%

Question

SCENARIO 4-1 Mothers Against Drunk Driving is a very visible group whose focus is to educate the public about the harm caused by drunk drivers.A study was recently done that emphasized the problem we all face with drinking and driving.Four 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: 
-Referring to Scenario 4-1, given that alcohol was not involved, what proportion of the accidents were single vehicle?
A)50/75 or 66.67% 
B)25/230 or 10.87% 
C)50/170 or 29.41% 
D)25/75 or 33.33%

Quizplus · Accepted Answer

To find the proportion of accidents that were single vehicle when alcohol was not involved, we need to look at the total number of accidents without alcohol and the number of those accidents that involved only one vehicle. From the table, we can see that there were 230 accidents that did not involve alcohol. Out of those, 25 accidents involved only one vehicle. Therefore, the proportion of accidents that were single vehicle when alcohol was not involved is 25/230 or 10.87%. To find the proportion of accidents that were single vehicle when alcohol was not involved, we need to look at the column where alcohol was not involved. According to the table, there were 230 accidents where alcohol was not involved. Out of these 230 accidents, 25 involved a single vehicle. Therefore, the proportion of accidents that were single vehicle when alcohol was not involved is 25/230 or 10.87%.

SCENARIO 4-1 Mothers Against Drunk Driving Is a Very Visible