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The lifetime of a certain transistor in a certain

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

Solution for problem 3E Chapter 2.5

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 3E

The lifetime of a certain transistor in a certain application has mean 900 hours and standard deviation 30 hours. Find the mean and standard deviation of the length of time that four transistors will last.

Step-by-Step Solution:

Answer

Step 1 of  3

Here they mean and standard deviation of one transistor

Now we need to find  mean and standard deviation of four transistors

The mean of the transistor is  =900

The standard deviation of the transistor is =30


Step 2 of 3

Chapter 2.5, Problem 3E is Solved
Step 3 of 3

Textbook: Statistics for Engineers and Scientists
Edition: 4
Author: William Navidi
ISBN: 9780073401331

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The lifetime of a certain transistor in a certain