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The article “Effect of Refrigeration on the potassium

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

Solution for problem 2E Chapter 5.7

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 2E

The article “Effect of Refrigeration on the potassium Bitartrate Stability Composition of Italin Wines”(A. Versari, D. Barbanti, et al., Italian Journal of Food Science, 2002:45-52) reports a study in which eight types of white wine had their tartaric acid concentration (in g/L) measured both before and after a cold stabilization process. The results are presented in the following table:

Wine Type

Before

After

Difference

1

2.86

2.59

0.27

2

2.85

2.47

0.38

3

1.84

1.58

0.26

4

1.60

1.56

0.04

5

0.80

0.78

0.02

6

0.89

0.66

0.23

7

2.03

1.87

0.16

8

1.90

1.71

0.19

Find a 95% confidence interval for the mean difference between the tartaric acid concentrations before and after the cold stabilization process.

Step-by-Step Solution:
Step 1 of 3

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Step 2 of 3

Chapter 5.7, Problem 2E is Solved
Step 3 of 3

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

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