5. Workers who survive a layoff of other employees at their location may suffer from "survivor guilt."A study of survivor guilt and its effects used 120 students who were offered an opportunity toearn extra course credit by proofreading as subjects. Each subject worked in the same cubicleas another student, who was an accomplice of the experimenters (they were working WITH theexperimenters). At a break midway through the work, one of three treatments was randomlyassigned to happen in each cubicle:I. The accomplice was told to leave; it was explained that this was because she performedpoorly.II. It was explained that unforeseen circumstances meant there was only enough work forone person. By “chance," the accomplice was chosen to be laid off.III. Both students continued to work after the break.The students' work performance (speed and accuracy) after break was compared to theirperformance before the break.Question:Population:Explanatory Variable:Response VariableControl:Randomization:Replication:

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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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A recent study investigated whether cell phone users experience separation anxiety when they cannot access their phones. Because blood pressure increases with anxiety, the researchers used systolic blood pressure as an operational measure of anxiety. The experiment involved a random sample of cell phone users that were divided into two groups at random. One group of participants completed a survey while their phones were locked in a cabinet in a separate room and the other group of participants completed the same survey while their phones were nearby. (The survey questions were unrelated to cell phone use.) At the end of the survey, theresearchers measured each participant's systolic blood pressure. The same experiment was conducted in Montreal, Toronto, Vancouver, and St. Zotique. The blood pressure data needed is below. Use these data to answer the following question: compute r2 for the data collected in st. zotique. Please answer to 5 decimal places. Cell Phone (CP) No Cell Phone…
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A TA in statistics thinks that the format of the conferences and the timing of the assignments may affect students' assignment marks (out of 10). He decided to design three conferences with a different format: (1) with lecturing, (2) with demonstrating problems, and (3) with involving students in active problem-solving. Twelve students attended one of the conferences (four in each format) and asked to submit their assignments at week 3. Another twelve students attended one of the conferences but asked to submit their assignments at week 5. The data are tabled below: Assignment Week 3 Week 5 Lecture 6,7,5,7 5,5,4,5 Format Demo problems 7,8,8,9 6,7,7,6 Active problems 9,10,10,10 8,9,9,10 Note: ΣΣΣx=1385 Perform the ANOVA test and table the results, stating all critical values. State and explain what should be the follow-up analysis after the overall F-test if any (NO calculation but just explain).
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