Question

Researchers report that students who were given questions to be answered while studying new material had better scores when tested on the material compared to students who were simply given an opportunity to reread the material. In a similar study, an instructor in a large psychology class gave one group of students questions to be answered while studying The overall average for was µ = 73.4, but the n= 16 students who answered questions had a mean of M = 78.3 with a standard deviation of s = 8.4. For this study, did answering questions while studying produce significantly higher scores?

Which of the tests indicated above should be used?
a. Independent Samples t-test
b. Repeated measures t-test
c. One-way ANOVA
d. Regression
e. Correlation
f. One-sample t-test
g. z-test

Answer 1

A related-samples t-test should be used to determine if answering questions while studying produced significantly higher scores.

Step-by-step explanation:

To determine if answering questions while studying produced significantly higher scores, a related-samples t-test should be used. This is because the same group of students was tested under two different conditions - answering questions and simply rereading the material. The mean and standard deviation of the group who answered questions were 78.3 and 8.4, respectively. By conducting a related-samples t-test and comparing the means of the two conditions, we can determine if the difference in scores is statistically significant.