d. Are the results (titration volumes) obtained by the two staff significantly different at the95% confidence level (Given: Sspooled = 0.28)?e. Using the Q test, decide if the second measurement (22.69 mL) for staff A should bediscarded. 3. Two laboratory staff titrated a 50.00 mL of hydrochloric acid with an unknown concentration with astandardized 0.1 N Sodium hydroxide.HCl + NaOHNaCl + H2OThe students obtained the following results:Student A: 23.17 mL, 22.69 mL, 23.25 mL, 22.97 mLStudent B: 25.25 mL, 25.19 mL, 25.23 mL, 25.23 mL

d. We need to apply t-test to answer this.

d. Are the results (titration volumes) obtained by the two staff significantly different at the 95% confidence level (Given: Spooled = 0.28)? e. Using the Q test, decide if the second measurement (22.69 mL) for staff A should be discarded.

d. Are the results (titration volumes) obtained by the two staff significantly different at the 95% confidence level (Given: Spooled = 0.28)? e. Using the Q test, decide if the second measurement (22.69 mL) for staff A should be discarded.

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

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Question

d. Are the results (titration volumes) obtained by the two staff significantly different at the
95% confidence level (Given: Sspooled = 0.28)?
e. Using the Q test, decide if the second measurement (22.69 mL) for staff A should be
discarded.

3. Two laboratory staff titrated a 50.00 mL of hydrochloric acid with an unknown concentration with a
standardized 0.1 N Sodium hydroxide.
HCl + NaOH
NaCl + H2O
The students obtained the following results:
Student A: 23.17 mL, 22.69 mL, 23.25 mL, 22.97 mL
Student B: 25.25 mL, 25.19 mL, 25.23 mL, 25.23 mL

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