The amount of time needed to wash a car at a car washing station is exponentially distributed with an expected value of 15 minutes You arrive at a car washing station, while the washing station is occupied and one other car is waiting for a washing The owner of this car informs you that the car in the washing station is already there for 10 minutes What is the probability that the car in the washing station will need no more than five other minutes? What is the probability that you have to wait more than 20 minutes before your car can be washed?

College Algebra
10th Edition
ISBN:9781337282291
Author:Ron Larson
Publisher:Ron Larson
Chapter8: Sequences, Series,and Probability
Section: Chapter Questions
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The amount of time needed to wash a car at a car washing station is exponentially distributed with an
expected value of 15 minutes You arrive at a car washing station, while the washing station is occupied
and one other car is waiting for a washing The owner of this car informs you that the car in the washing
station is already there for 10 minutes What is the probability that the car in the washing station will
need no more than five other minutes? What is the probability that you have to wait more than 20 minutes
before your car can be washed?
> 10
Transcribed Image Text:The amount of time needed to wash a car at a car washing station is exponentially distributed with an expected value of 15 minutes You arrive at a car washing station, while the washing station is occupied and one other car is waiting for a washing The owner of this car informs you that the car in the washing station is already there for 10 minutes What is the probability that the car in the washing station will need no more than five other minutes? What is the probability that you have to wait more than 20 minutes before your car can be washed? > 10
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