Answered: You are checking the accuracy of a…

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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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

Expert Solution

Step 1

$The mathematical equation of confidence interval is - CI = \bar{x} \pm z \times (\frac{s}{\sqrt{n}}) - - - - - - (1) Where, CI : Confidence interval \bar{x} : Mean z : z - value for confidence level s : Standard deviation n : Sample size$

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