A researcher wants to know whether an educational video about genetics is effective. This researcher created a quiz assessing knowledge about genetics. She recruited 6 undergraduates and gave them the...

A researcher wants to know whether an educational video about genetics is effective. This researcher created a quiz assessing knowledge about genetics. She recruited 6 undergraduates and gave them the quiz as a pre-test. Then they watched the educational video, and took the test a second time.

                Student                                Pre-test                                Post-test

                Anne                                                     2                                7

                Bob                                                        4                               5

                Cathy                                                    5                                 7

                Dave                                                      7                               8

                Emma                                                   2                               9

                Fred                                                       4                            6

Compute the t-test for repeated measures