# Interpretation Wow! In Problems 5-13 you constructed a lot of information regarding the pH of west Texas groundwater based on sample data. Let's continue the investigation. Look at the stem-and-leaf plot. Are there any unusually high or low pH levels in this sample of wells? How many wells are neutral (pH of 7)?

### Understanding Basic Statistics

8th Edition
Charles Henry Brase + 1 other
Publisher: Cengage Learning
ISBN: 9781337558075

### Understanding Basic Statistics

8th Edition
Charles Henry Brase + 1 other
Publisher: Cengage Learning
ISBN: 9781337558075

#### Solutions

Chapter
Section
Chapter 3, Problem 16CRP
Textbook Problem
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## InterpretationWow! In Problems 5-13 you constructed a lot of information regarding the pH of west Texas groundwater based on sample data. Let's continue the investigation.Look at the stem-and-leaf plot. Are there any unusually high or low pH levels in this sample of wells? How many wells are neutral (pH of 7)?

Expert Solution
To determine

Whether there are any unusually high or low pH levels in this sample of wells and also determine the number of wells that are neutral.

### Explanation of Solution

The largest PH value ground water is 8.8 and the smallest PH value ground water is 7.0. The stems are 7 and 8. Use the ones digit as the stem and the decimal digit as the leaf.

The Stem-and-Leaf plot for pH of West Texas ground waterÂ is obtained in problem 7 as:

 Stem-and-leaf plot-pH of West Texas ground water Â 7 000000001111111111 Â 7 222222222233333333333 Â 7 44444444455555555 Â 7 666666666777777 7 8888899999

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