Take BSc Tuition from the Best Tutors
Affordable fees 1-1 or Group class Flexible Timings Verified Tutors Search in
Time of the phone call is modeled with the expoential r.v with mean 12 minutes. calculate the probability that the call will last longer than half an hour.
Asked by Balaprasad Last Modified
Answer 
V Sriram kumar V sriram kumar
Senior Statistics Teacher with 20 years of experience from University of Hyderabad
Formula for exponential distribution is : f(x) = me–mx
By replacing the variables with mean = 12 mins and by information call will last for 0.2 hours to 0.5 hours, we can get the required probability will be : 1-me–mx
So, the answer is 0.082
read less
e^(-2.5) =0.082
read less
Mounika Kalidindi
Graduated from renowed Business school and expertise in teaching Mathematics and Physics
It is based on the concept of Exponential distribution.
Continuous random variable as it is measured- If x is the amount of time the phone call lasts which is 30 min in this scenario
As time is mean for decaying, the decaying parameter her is 1/mean = 1/12 = 0.08
So, the probability that phone call lasts for 30 minutes is = 0.08e^-0.08*30
read less
Deleted User
Score high in Math under the my guidance with 20 years teaching experience
Deependra Kumar
10 Years experience of training Xth board students for CBSE and ICSE Xth Board exams.
View 10 more Answers
Related Questions
Now ask question in any of the 1000+ Categories, and get Answers from Tutors and Trainers on UrbanPro.com
Ask a QuestionRelated Lessons
Recommended Articles
6 Exam Hall Tips To Follow, For Every Good Student
Appearing for exams could be stressful for students. Even though they might have prepared well, they could suffer from anxiety, tension etc. These are not good for their health and mind. However, following a few exam preparation tips can save them from all these and help them to score good marks. Let’s find out all...
Read full article >
6 Healthy Habits of School Children
While schools provide formal education to the children, the home is where they start learning about things informally. Parents think that schools will take the initiative to educate their children. Well, this is partially true, as parents also play an essential role in bringing up their child. For the development of particular...
Read full article >
5 Engaging Activities For Children To Get...
Learning for every child starts from a very young age. While the formal methods include school curriculums and private lessons, the informal methods include dancing, music, drawing, and various fun-filling activities. Playing games and practising these types of activities helps the children get out of boredom and...
Read full article >
The Trend of E-learning and it’s Benefits
E-learning is not just about delivering lessons online. It has a much broader scope that goes beyond manual paper or PowerPoint Presentations. To understand the reach of E-learning and how the whole process works in developing the Educational system, we will discuss a few points here. Let us find out how this new learning...
Read full article >
Looking for BSc Tuition ?
Learn from the Best Tutors on UrbanPro
Are you a Tutor or Training Institute?
Join UrbanPro Today to find students near youThe best tutors for BSc Tuition Classes are on UrbanPro
The best Tutors for BSc Tuition Classes are on UrbanPro
9
