The pH factor is a measurement of how acidic or alkaline water is. A reading of 7.0 indicates neutrality; values above 7.0 suggest alkalinity; and values below 7.0 indicate acidity. According to one study, the optimum likelihood of capturing bass occurs when the pH of the water is between 7.5 and 7.9. Let's say you fear acid rain is lowering the pH of your favorite fishing site, and you want to see if it's 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 level of the water samples less than 7.5?

MATLAB: An Introduction with Applications
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The pH factor is a measurement of how acidic or alkaline water is. A reading of 7.0 indicates neutrality; values above 7.0 suggest alkalinity; and values below 7.0 indicate acidity. According to one study, the optimum likelihood of capturing bass occurs when the pH of the water is between 7.5 and 7.9. Let's say you fear acid rain is lowering the pH of your favorite fishing site, and you want to see if it's 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 level of the water samples less than 7.5?
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