QUESTION 25 Please choose the answer of question25 in the Quizs Which of the following is an example of a matched pairs design? a. A teacher compares the pre-test and post-test scores of students. b. A teacher compares the scores of students using a computer- based method of instruction, with the scores of other students using a traditional method of instruction. c. A teacher compares the scores of students in her class on a standardized test with the national average score. d. A teacher calculates the average of scores of students on a pair of tests and wishes to see if this average is larger than 80%