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67. A general chemistry class carried out an experiment to determine the percentage (by mass) of acetic acid in vinegar. Ten students reported the following values: 5.22%, 5.28%, 5.22%, 5.30%, 5.19%, 5.23%, 5.33%, 5.26%, 5.15%, 5.22%. Determine the average value and the standard deviation from these data. How many of these results fell within one standard deviation of this average value?

67. A general chemistry class carried out an experiment to determine the percentage (by mass) of acetic acid in vinegar. Ten students reported the following values: 5.22%, 5.28%, 5.22%, 5.30%, 5.19%, 5.23%, 5.33%, 5.26%, 5.15%, 5.22%. Determine the average value and the standard deviation from these data. How many of these results fell within one standard deviation of this average value?

Principles of Modern Chemistry
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
ChapterA: Scientific Notation And Experimental Error
Section: Chapter Questions
Problem 8P
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67. A general chemistry class carried out an experiment to

determine the percentage (by mass) of acetic acid in

vinegar. Ten students reported the following values:

5.22%, 5.28%, 5.22%, 5.30%, 5.19%, 5.23%, 5.33%,

5.26%, 5.15%, 5.22%. Determine the average value and

the standard deviation from these data. How many of

these results fell within one standard deviation of this

average value?

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