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# Solved: The article Occurrence and Distribution of Ammonium in Iowa Groundwater (K

ISBN: 9780073401331 38

## Solution for problem 6 Chapter 5.5

Statistics for Engineers and Scientists | 4th Edition

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Problem 6

The article Occurrence and Distribution of Ammonium in Iowa Groundwater (K. Schilling, Water Environment Research, 2002:177186) describes measurements of ammonium concentrations (in mg/L) at a large number of wells in the state of Iowa. These included 349 alluvial wells and 143 quaternary wells. Of the alluvial wells, 182 had concentrations above 0.1, and 112 of the quaternary wells had concentrations above 0.1. Find a 95% confidence interval for the difference between the proportions of the two types of wells with concentrations above 0.1.

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Statistics: Ch. 1 Important Definitions • Statistics—Numerical description of data • Population—A set of all subjects or elements about which we are interested in making inferences • Frame—A list containing all members of a...

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##### ISBN: 9780073401331

Since the solution to 6 from 5.5 chapter was answered, more than 268 students have viewed the full step-by-step answer. This full solution covers the following key subjects: . This expansive textbook survival guide covers 153 chapters, and 2440 solutions. Statistics for Engineers and Scientists was written by and is associated to the ISBN: 9780073401331. The full step-by-step solution to problem: 6 from chapter: 5.5 was answered by , our top Statistics solution expert on 06/28/17, 11:15AM. The answer to “The article Occurrence and Distribution of Ammonium in Iowa Groundwater (K. Schilling, Water Environment Research, 2002:177186) describes measurements of ammonium concentrations (in mg/L) at a large number of wells in the state of Iowa. These included 349 alluvial wells and 143 quaternary wells. Of the alluvial wells, 182 had concentrations above 0.1, and 112 of the quaternary wells had concentrations above 0.1. Find a 95% confidence interval for the difference between the proportions of the two types of wells with concentrations above 0.1.” is broken down into a number of easy to follow steps, and 83 words. This textbook survival guide was created for the textbook: Statistics for Engineers and Scientists , edition: 4.

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