You are checking the accuracy of a volumetric flask marked 10.00 mL . To calculate the volume of water contained in the flask, you first measure the mass of the empty flask and the mass of the flask filled with water and take the difference. Then, you correct for the buoyancy factor and divide by the density of the water. The result of 8 such measurements is given in the table. Calculate the 95% confidence interval for these measurements with a mean of 10.03.

Chemistry for Engineering Students
4th Edition
ISBN:9781337398909
Author:Lawrence S. Brown, Tom Holme
Publisher:Lawrence S. Brown, Tom Holme
Chapter1: Introduction To Chemistry
Section: Chapter Questions
Problem 1.28PAE: 1.28 What is a “derived” unit?
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You are checking the accuracy of a volumetric flask marked 10.00 mL . To calculate the volume of water contained in the flask, you first measure the mass of the empty flask and the mass of the flask filled with water and take the difference. Then, you correct for the buoyancy factor and divide by the density of the water. The result of 8 such measurements is given in the table.

Calculate the 95% confidence interval for these measurements with a mean of 10.03.

 

Measurement
1
2
3
4
5
6
7
8
Volume (mL)
10.045
10.049
10.024
10.048
10.022
10.008
10.054
10.006
Transcribed Image Text:Measurement 1 2 3 4 5 6 7 8 Volume (mL) 10.045 10.049 10.024 10.048 10.022 10.008 10.054 10.006
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