1. A chemist working in a hospital clinical laboratory obtained the following values for uric acid in blood serum: 4.63, 4.58, 4.72, 4.21, 4.67 and 4.65 %. (a) Use the 95% confidence level to test any dubious values. What value should be reported as the b) mean? c) sd? d) CV?
1. A chemist working in a hospital clinical laboratory obtained the following values for uric acid in blood serum: 4.63, 4.58, 4.72, 4.21, 4.67 and 4.65 %. (a) Use the 95% confidence level to test any dubious values. What value should be reported as the b) mean? c) sd? d) CV?
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...
Related questions
Question
![Practice Problem 2.2
ANALYTICAL CHEMISTRY
1. A chemist working in a hospital clinical laboratory obtained the following values for
uric acid in blood serum: 4.63, 4.58, 4.72, 4.21, 4.67 and 4.65 %. (a) Use the 95%
confidence level to test any dubious values. What value should be reported as the b)
mean? c) sd? d) CV?
2. Quantitative analysis student Analytical analyzed an ore sample for its lead content
and obtained a mean of 4.75% Pb for five measurements. If the certified true value is
4.50%, what is the (a) percent error? (b) percent accuracy?
3. Identify the data set with the highest (a) precision and (b) accuracy.
Data set
Mean
Percent Error
Certified true
value
Standard
deviation
1
0.500
0.444
0.041
1.00
1.33
0.253
50.00
45.20
0.041
100.0
99.1
3.22
COLLEGE OF SCIENCE
NM4
2
3
Click to add notes
P](/v2/_next/image?url=https%3A%2F%2Fcontent.bartleby.com%2Fqna-images%2Fquestion%2F5105bf69-1fa8-495e-b0a4-32387d64c0e6%2Fece661dd-ee54-4540-bcc2-5b8cc20314ba%2Flguoplm_processed.jpeg&w=3840&q=75)
Transcribed Image Text:Practice Problem 2.2
ANALYTICAL CHEMISTRY
1. A chemist working in a hospital clinical laboratory obtained the following values for
uric acid in blood serum: 4.63, 4.58, 4.72, 4.21, 4.67 and 4.65 %. (a) Use the 95%
confidence level to test any dubious values. What value should be reported as the b)
mean? c) sd? d) CV?
2. Quantitative analysis student Analytical analyzed an ore sample for its lead content
and obtained a mean of 4.75% Pb for five measurements. If the certified true value is
4.50%, what is the (a) percent error? (b) percent accuracy?
3. Identify the data set with the highest (a) precision and (b) accuracy.
Data set
Mean
Percent Error
Certified true
value
Standard
deviation
1
0.500
0.444
0.041
1.00
1.33
0.253
50.00
45.20
0.041
100.0
99.1
3.22
COLLEGE OF SCIENCE
NM4
2
3
Click to add notes
P
Expert Solution
![](/static/compass_v2/shared-icons/check-mark.png)
This question has been solved!
Explore an expertly crafted, step-by-step solution for a thorough understanding of key concepts.
Step by step
Solved in 2 steps with 3 images
![Blurred answer](/static/compass_v2/solution-images/blurred-answer.jpg)
Knowledge Booster
Learn more about
Need a deep-dive on the concept behind this application? Look no further. Learn more about this topic, chemistry and related others by exploring similar questions and additional content below.Recommended textbooks for you
![Chemistry](https://www.bartleby.com/isbn_cover_images/9781305957404/9781305957404_smallCoverImage.gif)
Chemistry
Chemistry
ISBN:
9781305957404
Author:
Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste
Publisher:
Cengage Learning
![Chemistry](https://www.bartleby.com/isbn_cover_images/9781259911156/9781259911156_smallCoverImage.gif)
Chemistry
Chemistry
ISBN:
9781259911156
Author:
Raymond Chang Dr., Jason Overby Professor
Publisher:
McGraw-Hill Education
![Principles of Instrumental Analysis](https://www.bartleby.com/isbn_cover_images/9781305577213/9781305577213_smallCoverImage.gif)
Principles of Instrumental Analysis
Chemistry
ISBN:
9781305577213
Author:
Douglas A. Skoog, F. James Holler, Stanley R. Crouch
Publisher:
Cengage Learning
![Chemistry](https://www.bartleby.com/isbn_cover_images/9781305957404/9781305957404_smallCoverImage.gif)
Chemistry
Chemistry
ISBN:
9781305957404
Author:
Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste
Publisher:
Cengage Learning
![Chemistry](https://www.bartleby.com/isbn_cover_images/9781259911156/9781259911156_smallCoverImage.gif)
Chemistry
Chemistry
ISBN:
9781259911156
Author:
Raymond Chang Dr., Jason Overby Professor
Publisher:
McGraw-Hill Education
![Principles of Instrumental Analysis](https://www.bartleby.com/isbn_cover_images/9781305577213/9781305577213_smallCoverImage.gif)
Principles of Instrumental Analysis
Chemistry
ISBN:
9781305577213
Author:
Douglas A. Skoog, F. James Holler, Stanley R. Crouch
Publisher:
Cengage Learning
![Organic Chemistry](https://www.bartleby.com/isbn_cover_images/9780078021558/9780078021558_smallCoverImage.gif)
Organic Chemistry
Chemistry
ISBN:
9780078021558
Author:
Janice Gorzynski Smith Dr.
Publisher:
McGraw-Hill Education
![Chemistry: Principles and Reactions](https://www.bartleby.com/isbn_cover_images/9781305079373/9781305079373_smallCoverImage.gif)
Chemistry: Principles and Reactions
Chemistry
ISBN:
9781305079373
Author:
William L. Masterton, Cecile N. Hurley
Publisher:
Cengage Learning
![Elementary Principles of Chemical Processes, Bind…](https://www.bartleby.com/isbn_cover_images/9781118431221/9781118431221_smallCoverImage.gif)
Elementary Principles of Chemical Processes, Bind…
Chemistry
ISBN:
9781118431221
Author:
Richard M. Felder, Ronald W. Rousseau, Lisa G. Bullard
Publisher:
WILEY