On average , a certain computer part lasts 10 years. the length of time the computer part lasts is exponentially distributed i) What is the probability that a computer part lasts more than 7 years ii) on average, how long would 5 computer parts last if they are used one after another iii) Eighty percent of computer parts last at most how long ?

On average , a certain computer part lasts 10 years. the length of time the computer part lasts is exponentially distributed i) What is the probability that a computer part lasts more than 7 years ii) on average, how long would 5 computer parts last if they are used one after another iii) Eighty percent of computer parts last at most how long ?

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...

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Question

On average , a certain computer part lasts 10 years. the length of time the computer part lasts is exponentially distributed
i) What is the probability that a computer part lasts more than 7 years
ii) on average, how long would 5 computer parts last if they are used one after another
iii) Eighty percent of computer parts last at most how long ?

iv) What is the probabilityv that a computer part lasts between 9 and 11 years

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