The following data give the recovery of bromide from spiked samples of vegetable matter, measured using a gas–liquid chromatographic method. The same amount of bromide was added to each specimen (Roughan, J.A., Roughan, P.A. and Wilkins, J.P.G., 1983, Analyst, 108: 742). Tomato: 777 790 759 790 770 758 764 ug/g Cucumber: 782 773 778 765 789 797 782 ug/g (a) Test whether the recoveries from the two vegetables have variances which differ significantly. (b) Test whether the mean recovery rates differ significantly.
The following data give the recovery of bromide from spiked samples of vegetable matter, measured using a gas–liquid chromatographic method. The same amount of bromide was added to each specimen (Roughan, J.A., Roughan, P.A. and Wilkins, J.P.G., 1983, Analyst, 108: 742). Tomato: 777 790 759 790 770 758 764 ug/g Cucumber: 782 773 778 765 789 797 782 ug/g (a) Test whether the recoveries from the two vegetables have variances which differ significantly. (b) Test whether the mean recovery rates differ significantly.
Principles of Instrumental Analysis
7th Edition
ISBN:9781305577213
Author:Douglas A. Skoog, F. James Holler, Stanley R. Crouch
Publisher:Douglas A. Skoog, F. James Holler, Stanley R. Crouch
Chapter26: An Introduction To Chromatographic Separations
Section: Chapter Questions
Problem 26.14QAP
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The following data give the recovery of bromide from spiked samples of vegetable matter, measured
using a gas–liquid chromatographic method. The same amount of bromide was added to each specimen
(Roughan, J.A., Roughan, P.A. and Wilkins, J.P.G., 1983, Analyst, 108: 742).
Tomato: 777 790 759 790 770 758 764 ug/g
Cucumber: 782 773 778 765 789 797 782 ug/g
(a) Test whether the recoveries from the two vegetables have variances which differ significantly.
(b) Test whether the mean recovery rates differ significantly.
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