You are checking the accuracy of a volumetric flask marked 10.00 mL. ToMeasurementVolume (mL)calculate the volume of water contained in the flask, you first measure the mass110.047of the empty flask and the mass of the flask filled with water and take the10.052difference. Then, you correct for the buoyancy factor and divide by the density of310.022the water. The result of 8 such measurements is given in the table.410.047Calculate the mean and the 95% confidence interval for these measurements.510.02410.016710.065810.024mean:mL95% confidence interval: +mLCan you, with 95% confidence, say that the nominal value of 10.00 mL can be the true volume of the flask?noyes

Mean: It is the average value of all the measured values. The formula to calculate the mean is…

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 Measurement Volume (mL) 1 10.047 of the empty flask and the mass of the flask filled with water and take the 10.052 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. 3 10.022 4 10.047 Calculate the mean and the 95% confidence interval for these measurements. 10.024 10.016 7 10.065 10.024 mean: mL 95% confidence interval: + mL Can you, with 95% confidence, say that the nominal value of 10.00 mL can be the true volume of the flask? no O yes

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 Measurement Volume (mL) 1 10.047 of the empty flask and the mass of the flask filled with water and take the 10.052 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. 3 10.022 4 10.047 Calculate the mean and the 95% confidence interval for these measurements. 10.024 10.016 7 10.065 10.024 mean: mL 95% confidence interval: + mL Can you, with 95% confidence, say that the nominal value of 10.00 mL can be the true volume of the flask? no O yes

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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Question

You are checking the accuracy of a volumetric flask marked 10.00 mL. To
Measurement
Volume (mL)
calculate the volume of water contained in the flask, you first measure the mass
1
10.047
of the empty flask and the mass of the flask filled with water and take the
10.052
difference. Then, you correct for the buoyancy factor and divide by the density of
3
10.022
the water. The result of 8 such measurements is given in the table.
4
10.047
Calculate the mean and the 95% confidence interval for these measurements.
5
10.024
10.016
7
10.065
8
10.024
mean:
mL
95% confidence interval: +
mL
Can you, with 95% confidence, say that the nominal value of 10.00 mL can be the true volume of the flask?
no
yes

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