3. Four chemical treatments for fabric are tobe compared with regard to their ability toresist stains. Two different types of fabric areavailable for the experiment, so itto apply each chemical to a sample of eachof type of fabric. The result is randomizedblock design with four treatments and twoblocks. The measurements(resistance scores)are listed below. Is there evidence ofsignificant differencesresistancedecidedamong the meanfor the chemicals? IsScoresblocking effective?Treatment (Chemical)Resistance ScoreBlock(Fabric)13Means138.498136.9Means75.510.574-

Answered: Image /qna-images/answer/242dbea4-65b7-4ff0-88d8-f2fbda24b1c8.jpg

Answered: 3. Four chemical treatments for fabric…

MATLAB: An Introduction with Applications

6th Edition

ISBN:9781119256830

Author:Amos Gilat

Publisher:Amos Gilat

Chapter1: Starting With Matlab

Section: Chapter Questions

Problem 1P

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Researchers investigate how the presence of cell phones influence the quality of human interaction. Subjects are randomly selected from a population and divided into an experimental group that is asked to leave their phones in the front of the room and a control group that are not asked to leave their cell phones at the front of the room. Subjects are left alone for 10 minutes and then asked to take a survey designed to measure quality of interactions they had with others in the experiment. What statistical test is appropriate?
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