The pH factor is a measure of the acidity and alkalinity of water. A reading of 7.0 is neutral; values in excess of 7.0 indicate alkalinity; those below 7.0 imply acidity. In one study, it is mentioned that the best chance of catching bass occurs when the pH of the water is in the range 7.5 to 7.9. Suppose your suspect that acid rain is lowering the pH of your favourite fishing spot and you wish to determine whether the pH is less than 7.5. You obtained 10 samples and got the following data: 7.3, 7.4, 7.2, 7.0, 7.5,7.4,7.3,7.3,7.2 and 7.1. Use 0.05 alpha. a. State the alternative and null hypothesis. b. Is the pH of the water samples less than 7.5?
The pH factor is a measure of the acidity and alkalinity of water. A reading of 7.0 is neutral; values in excess of 7.0 indicate alkalinity; those below 7.0 imply acidity. In one study, it is mentioned that the best chance of catching bass occurs when the pH of the water is in the range 7.5 to 7.9. Suppose your suspect that acid rain is lowering the pH of your favourite fishing spot and you wish to determine whether the pH is less than 7.5. You obtained 10 samples and got the following data: 7.3, 7.4, 7.2, 7.0, 7.5,7.4,7.3,7.3,7.2 and 7.1. Use 0.05 alpha. a. State the alternative and null hypothesis. b. Is the pH of the water samples less than 7.5?
Principles of Modern Chemistry
8th Edition
ISBN:9781305079113
Author:David W. Oxtoby, H. Pat Gillis, Laurie J. Butler
Publisher:David W. Oxtoby, H. Pat Gillis, Laurie J. Butler
Chapter15: Acid–base Equilibria
Section: Chapter Questions
Problem 7P
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The pH factor is a measure of the acidity and alkalinity of water. A reading of 7.0 is neutral; values in excess
of 7.0 indicate alkalinity; those below 7.0 imply acidity. In one study, it is mentioned that the best chance
of catching bass occurs when the pH of the water is in the range 7.5 to 7.9. Suppose your suspect that acid
rain is lowering the pH of your favourite fishing spot and you wish to determine whether the pH is less
than 7.5. You obtained 10 samples and got the following data: 7.3, 7.4, 7.2, 7.0, 7.5,7.4,7.3,7.3,7.2 and
7.1. Use 0.05 alpha.
a. State the alternative and null hypothesis.
b. Is the pH of the water samples less than 7.5?
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