Research Question A researcher would like to determine whether she can predict students' performance on a final exam from the students' scores on the previous three exams A researcher would like to determine whether exercise improves performance on a memory task. He will randomly assign participants to one of two conditions: exercise or control. He will measure memory using |a 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 to relationship satisfaction scores among college students. She will measure both jealousy and relationship satisfaction using separate surveys.
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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".
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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