A system consists of five components is connected in series as shown below. 3 4 5 As soon as one component fails, the entire system will fail. Assume that the components fail independently of one another. (a) Suppose that each of the first two components have lifetimes that are exponentially distributed with mean 103 weeks, and that each of the last three components have lifetimes that are exponentially distributed with mean 130 weeks. Find the probability that the system lasts at least 55 weeks. (b) Now suppose that each component has a lifetime that is exponentially distributed with the same mean. What must that mean be (in years) so that 92% of all such systems lasts at least one year?

A First Course in Probability (10th Edition)
10th Edition
ISBN:9780134753119
Author:Sheldon Ross
Publisher:Sheldon Ross
Chapter1: Combinatorial Analysis
Section: Chapter Questions
Problem 1.1P: a. How many different 7-place license plates are possible if the first 2 places are for letters and...
icon
Related questions
Question
100%
A system consists of five components is connected in series as shown below.
3
4
5
As soon as one component fails, the entire system will fail. Assume that the components fail independently of
one another.
(a) Suppose that each of the first two components have lifetimes that are exponentially distributed with mean 103
weeks, and that each of the last three components have lifetimes that are exponentially distributed with mean
130 weeks. Find the probability that the system lasts at least 55 weeks.
(b) Now suppose that each component has a lifetime that is exponentially distributed with the same mean. What
must that mean be (in years) so that 92% of all such systems lasts at least one year?
Transcribed Image Text:A system consists of five components is connected in series as shown below. 3 4 5 As soon as one component fails, the entire system will fail. Assume that the components fail independently of one another. (a) Suppose that each of the first two components have lifetimes that are exponentially distributed with mean 103 weeks, and that each of the last three components have lifetimes that are exponentially distributed with mean 130 weeks. Find the probability that the system lasts at least 55 weeks. (b) Now suppose that each component has a lifetime that is exponentially distributed with the same mean. What must that mean be (in years) so that 92% of all such systems lasts at least one year?
Expert Solution
trending now

Trending now

This is a popular solution!

steps

Step by step

Solved in 2 steps

Blurred answer
Similar questions
Recommended textbooks for you
A First Course in Probability (10th Edition)
A First Course in Probability (10th Edition)
Probability
ISBN:
9780134753119
Author:
Sheldon Ross
Publisher:
PEARSON
A First Course in Probability
A First Course in Probability
Probability
ISBN:
9780321794772
Author:
Sheldon Ross
Publisher:
PEARSON