THE NEXT QUESTIONS ARE BASED ON THE FOLLOWING INFORMATION:
A manufacturer of automobiles conducted a market survey.Eighty percent of the customers want better fuel efficiency,while 55% want a vehicle navigation system and 45% percent want both features.
-The probability that a person wants better fuel efficiency but not a vehicle navigation system is:
A)0.90
B)0.10
C)0.45
D)0.35

Question

Quizplus · Accepted Answer

The probability that a person wants better fuel efficiency but not a vehicle navigation system can be calculated by subtracting the percentage of customers who want both features from the percentage of customers who want better fuel efficiency. This is 80% (better fuel efficiency) - 45% (both features) = 35%, which corresponds to option D.