Question

question 7
2 pts
a researcher is interested in determining if students in a calculus course who naturally sit near the front of a lecture hall perform better on a final exam than students who naturally sit near the back of the lecture hall. a total of 180 students take part in this study, and their final exam scores are compared based on where they typically sit. based on this information, which one of the following statements is correct?
the explanatory variable is the amount of time spent sitting in a particular location in the lecture hall.
because the sample size is less than 200, we should not generalize the results of this study beyond the sample.
the response variable is the final exam score received by the student.
none of the other answer options is a correct statement about this study.
this is an example of an experiment.

Explanation:

• Explanatory variable: It's the location (front or back), not the time spent.
• Sample size generalization: Sample size alone (180 vs. 200) isn't the sole determinant for generalization.
• Response variable: The final exam score is what's being measured (response) based on location (explanatory).
• Experiment vs. observational study: This is an observational study as the researcher didn't assign students to seats.

Answer:

The response variable is the final exam score received by the student.