Answer
The appropriate test.
In the provided study, the test scores of two independent samples are considered. To draw a decision about the mean score of both the tests, independent two-sample t-test can be applied.
The data collection method.
The two different types of scores are compared in the study. If the matched-pairs design is used to collect the data, then the researcher gets a better picture about the dissimilarities in the mean score of the students. Because in matched pairs design, the same sample is used for both the cases.
Work Step by Step
Given above.