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The length of a rod is to be measured by a process whose

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

Solution for problem 3E Chapter 3.2

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

Problem 3E

The length of a rod is to be measured by a process whose uncertainty is 3 mm. Several independent measurements will be taken, and the average of these measurements will be used to estimate the length of the rod. How many measurements must be made so that the uncertainty in the average will be 1 mm?

Step-by-Step Solution:

Answer :

Step 1 of 2 :

Given,

The uncertainty of the length of the road is 3 mm and several independent measurements are taken, to estimate the length of the rod the average of independent measurements will be used.

The uncertainty in the average is 1 mm.

The claim is to find how many measurements must be made so that the uncertainty in the average will be 1 mm.


Step 2 of 2

Chapter 3.2, Problem 3E is Solved
Textbook: Statistics for Engineers and Scientists
Edition: 4
Author: William Navidi
ISBN: 9780073401331

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The length of a rod is to be measured by a process whose