Enter the letter next to each stop ТуреResearch Questionof testA researcher would like to determine whether she can predict students' performance on a final exam fromthe students' scores on the previous three examsA researcher would like to determine whether exercise improves performance on a memory task. He willrandomly assign participants to one of two conditions: exercise or control. He will measure memory usinga memory task and compare the performance of both groups.In her research course, a student has designed a study to determine whether jealousy scores are related torelationship satisfaction scores among college students. She will measure both jealousy and relationshipsatisfaction using separate surveys.A researcher would like to know whether in person tutoring is as effective as virtual tutoring. She is alsointerested in whether the students' major makes a difference. She will randomly assign volunteer biologymajors and volunteer math majors to either the virtual tutoring or the in-person tutoring and will try todetermine whether the effect of tutoring type depends on the students' major.O A high school calculus teacher would like to know whether the average Math SAT of the students in herclass is the same as the national average Math SAT score.A researcher will examine whether hair color affects attractiveness ratings. She will assign participants torate the attractiveness of a person on a photograph. The 90 volunteer participants will be assigned toeither the red hair condition, the brown hair condition, or the blond hair condition. In all cases, the imagewill be the same, but the hair color will be changed. The researcher will then compare the attractivenessratings of the three groups.A researcher is evaluating whether a medication can reduce hypertension. She will administer the newdrug to a sample of 1000 volunteers and measure their blood pressure at 1 month, 2 months and 4 months.A new yoga instructor would like to determine whether stress levels of 30 people in his yoga class isreduced after participating in yoga class. He plans to measure stress using a survey before and after yogaclass for the 30 adults in the class.A. Single sample meanB. The value of the mean difference D (for testing change between two related samples)C. The value of a correlation coefficientD. The value of a slopeE. Two independent samplesF. More than two independent samples (Single IV)G. More than 2 repeated measures (related samples) -(Single IV)H. Two factor models (2 IVs combined to test interaction effects)

Answered: Research Question A researcher would…

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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Hi! Thank you for the question, As per the honor code, we are allowed to answer three sub-parts at a time so we are answering the first three as you have not mentioned which of these you are looking for. Please re-submit the question separately for the remaining sub-parts.

a).

It is given that a researcher wants to know whether she should predict students' performance on a final exam from the students' scores on the previous three exams or not.

To do a prediction about the performance she needs a regression model where the regressor would be 3 exam scores, and to test the regression model she will test the slop so that she could get a conclusion whether the exam score (or regressor) is affecting the model or not.

Thus, the correct option is, "D: The value of a slope".

Step 2

b).

It is given that a researcher wants to see whether exercise improves performance on a memory task. Therefore, he would assign participants to one of two conditions such as exercise or control.

Since it is given he would have two groups first one is exercise and the other one is the control group. Thus, both groups are independent. And to the two independent groups, we use, "Two independent samples test".

Thus, the correct option is, "E".

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