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A certain type of component can be purchased new or used.

Statistics for Engineers and Scientists | 4th Edition | ISBN: 9780073401331 | Authors: William Navidi ISBN: 9780073401331 38

Solution for problem 7E Chapter 4.7

Statistics for Engineers and Scientists | 4th Edition

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Statistics for Engineers and Scientists | 4th Edition | ISBN: 9780073401331 | Authors: William Navidi

Statistics for Engineers and Scientists | 4th Edition

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Problem 7E

Problem 7E

A certain type of component can be purchased new or used. Fifty percent of all new components last more than five years, but only 30% of used components last more than five years. Is it possible that the lifetimes of new components are exponentially distributed? Explain.

Step-by-Step Solution:

Solution

Step 1 of 1

No, The lifetime of new components are not exponentially distributed

The probability of new components last more than 5 years should be equal to the probability of used components last more than 5 years

Because of lack of memory property


Step 2 of 1

Chapter 4.7, Problem 7E is Solved
Textbook: Statistics for Engineers and Scientists
Edition: 4
Author: William Navidi
ISBN: 9780073401331

Since the solution to 7E from 4.7 chapter was answered, more than 387 students have viewed the full step-by-step answer. The full step-by-step solution to problem: 7E from chapter: 4.7 was answered by , our top Statistics solution expert on 06/28/17, 11:15AM. This full solution covers the following key subjects: new, components, used, years, lifetimes. This expansive textbook survival guide covers 153 chapters, and 2440 solutions. The answer to “A certain type of component can be purchased new or used. Fifty percent of all new components last more than five years, but only 30% of used components last more than five years. Is it possible that the lifetimes of new components are exponentially distributed? Explain.” is broken down into a number of easy to follow steps, and 46 words. This textbook survival guide was created for the textbook: Statistics for Engineers and Scientists , edition: 4. Statistics for Engineers and Scientists was written by and is associated to the ISBN: 9780073401331.

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