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and unchlorinated drinking water. The results ± standa deviation (number of samples) are Sample Source Rain Water Drinking Water 0.078 ± 0.007 mg/L (n=5) Gas Chromatography 0.068 ± 0.005 mg/L (n=7) Spectrophotometry 0.063 + 0.008 mg/L (n=E 0.087 ± 0.008 mg/L (n=E Do the two methods agree with each other at the 95 confidence level for both rainwater and drinking water

and unchlorinated drinking water. The results ± standa deviation (number of samples) are Sample Source Rain Water Drinking Water 0.078 ± 0.007 mg/L (n=5) Gas Chromatography 0.068 ± 0.005 mg/L (n=7) Spectrophotometry 0.063 + 0.008 mg/L (n=E 0.087 ± 0.008 mg/L (n=E Do the two methods agree with each other at the 95 confidence level for both rainwater and drinking water

Chemistry
Chemistry
10th Edition
ISBN:9781305957404
Author:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste
Publisher:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste
Chapter1: Chemical Foundations
Section: Chapter Questions
Problem 1RQ: Define and explain the differences between the following terms. a. law and theory b. theory and...
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I solved A, but do not know how to solve B!

4.22 Nitrite (NO2') was measured by two methods in rain water and unchlorinated drinking water. The results ± standard deviation (number of samples) are Sample Source Rain Water Drinking Water 0.078 ± 0.007 mg/L (n=5) Gas Chromatography 0.068 ± 0.005 mg/L (n=7) Spectrophotometry 0.063 + 0.008 mg/L (n=5) 0.087 + 0.008 mg/L (n=5) (a) Do the two methods agree with each other at the 95% confidence level for both rainwater and drinking water? (b) For each method, does the drinking water contain significantly more nitrite than the rainwater (at the 95% confidence level).
Transcribed Image Text:4.22 Nitrite (NO2') was measured by two methods in rain water and unchlorinated drinking water. The results ± standard deviation (number of samples) are Sample Source Rain Water Drinking Water 0.078 ± 0.007 mg/L (n=5) Gas Chromatography 0.068 ± 0.005 mg/L (n=7) Spectrophotometry 0.063 + 0.008 mg/L (n=5) 0.087 + 0.008 mg/L (n=5) (a) Do the two methods agree with each other at the 95% confidence level for both rainwater and drinking water? (b) For each method, does the drinking water contain significantly more nitrite than the rainwater (at the 95% confidence level).
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