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In the article "Occurrence and Distribution of Ammonium in

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

Solution for problem 6SE Chapter 4

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 6SE

In the article "Occurrence and Distribution of Ammonium in Iowa Groundwater" (K. Schilling, Water Environment Research, 2002:177 186), ammonium concentrations (in mg/L) were measured at a large number of wells in the state of Iowa. The mean concentration was 0.71, the median was 0.22, and the standard deviation was 1.09. Is it possible to determine whether these concentrations are approximately normally distributed? If so, say whether they are normally distributed, and explain how you know. If not, describe the additional information you would need to determine whether they are normally distributed.

Step-by-Step Solution:

Answer :

Step 1 of 2 :

Given, In Occurrence and Distribution of Ammonium in Iowa groundwater, ammonium concentrations were measured at a large number of wells in the state of Iowa.

The mean concentration is 0.71, the median is 0.22 and the standard deviation is 1.09.

The claim is to suggest whether these concentrations are approximately normally distributed.

Step 2 of 2

Chapter 4, Problem 6SE is Solved
Textbook: Statistics for Engineers and Scientists
Edition: 4
Author: William Navidi
ISBN: 9780073401331

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In the article "Occurrence and Distribution of Ammonium in

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