A student would like to analyze a dataset comprising the scores of a group ofparticipants on three variables, including two categorical/nominal independentvariables (IVS) and a continuous, ratio dependent variable (DV). In the researchconcerned, each participant provides one score for each of the three variables (i.e.no missing data), and the research question is how the two IVs may affect the DV.The student is deliberating whether to apply (i) a factorial between-subjects ANOVAor (ii) two separate between-subjects one-way ANOVAS (one ANOVA for each of theIVs) for analyzing the data. Assuming that you are now advising the student on thechoice between option (i) and option (ii), answer the following queries of the studentand explain each of your answers in no more than three sentences. (No marks foranswers with no explanation.)a. For the dataset and research question, will option (i) and option (ii) provide thesame set of statistical significance tests for the omnibus hypotheses?b. Will option (i) and option (ii) always give the same p-value for testing therespective main effects of the two IVs?

Answered: For the dataset and research question,…

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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It is more difficult to reject a null hypothesis if we use a 10% level of significance compared with a 5% level of significance. True or False
A local teacher wants to see if teaching writing in different ways impacts student learning. She has two classes of similar characteristics. In one class, she will use Teaching Strategy A and in the other class she will use Teaching Strategy B. She ran her analysis in Microsoft Excel and received the following output table. If the P value is less than 0.05, the null hypothesis may be rejected. Based on the data table, what decision should the teacher make about the hypothesis?
For the following cases, you may use either the P-value approach or the rejection region approach to present a full hypothesis test, including: Identifying the claim and H0 and Ha, Finding the appropriate standardized test statistic, Finding the P-value or the rejection region, Deciding whether to reject or fail to reject the null hypothesis, and Interpreting the decision in the context of the original claim. A fitness magazine advertises that the mean monthly cost of joining a health club is less than $25. You work for a consumer advocacy group and are asked to test this claim. You find that a random sample of 18 clubs has a mean monthly cost of $26.25 and a standard deviation of $3.23. Perform the appropriate hypothesis test at α = 0.10.
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-What is a research question for the following scenario? What would the independent variable (IV) be for this question and scenario? -What would the dependant variable (DV) be for this question and scenario? Levels of groups’ certainties about their eyewitness testimony to a simulated crime were compared. Thefirst group was set up to be “right” in its eyewitness accounts and the second group was set up to be“wrong”; the desire was to see if confidence differed across groups. Thirty-four participants wererecruited from a college campus and randomly divided into two groups, both of which were shown avideo of a crime scenario (length: 58 seconds) in which the perpetrator’s facial characteristics (withrespect to the camera) were clearly visible at two separate points and sporadically visible at others. Halfthe participants then were shown a five-individual lineup that contained the perpetrator in the video(“Group A”), and half the participants were shown a five-individual lineup that…
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For the dataset and research question, will option (i) and option (ii) provide the same set of statistical significance tests for the omnibus hypotheses? Will option (i) and option (ii) always give the same p-value for testing the respective main effects of the two IVs?