2. A researcher conducts the following study: "Does eating fruit improve your IQ" She gathered 100 people and didan IQ test for them. She then divided them into 4 groups, the first group were made to take no fruit for 3 months,the next group were made to take little fruits, the 3rd group took more fruits, and the last group were made to takea lot of fruits. Then at the end of the 3 months, they took IQ test again to note the improvement levels in theirIQ's or otherwise. The anxiety level of all of them were recorded.a. Is this an observational study or an experiment? Explain.b) List some confounding or lurking variables.c) Name the Explanatory variable and the Response variable

In an observational study the researcher records only what he observes. But in an experimental study…

Answered: A researcher conducts the following…

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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If a students rank in a class of 200 is 12, find the students percentile rank
ALREADY HAVE FIRST THREE ANSWERS NEED THE REST. ANOVA. Dr. Milgram is conducting a patient satisfaction survey, rating how well her patients like her on a scale of 1-10. Her patients tend to fall into three categories: “Like a lot”, “like somewhat”, and “dislike a lot”. She believes that she might get different satisfaction scores from people in each group, but (because she's not great at numbers) she wants you to do an ANOVA to be sure. She has collected data from 12 patients (three equal groups) with the following results. Group 1) “Like a lot” Mean: 8 SS: 2 N: df: Group 2) “Like somewhat” Mean: 5 SS: 6 N: df: Group 3) “Dislike a lot” Mean: 2 SS: 4 N: df: Grand Mean: 4 df Within-Group: 9 df Between-Groups: 2 Estimated Variance (S21) for Group 1: _______ Estimated Variance (S22)…
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