A Group of 10 Identical Twins Were Assembled for a Weekend

A group of 10 identical twins were assembled for a weekend of testing by a research laboratory. As part of the testing, one member of each pair was assigned to Group 1, leaving the other member to serve in Group 2. Both groups viewed a silent film which showed several "crime scenes."Afterward, both groups filled out a questionnaire in which high scores indicate that the judge thought the victim was more responsible for the crime. Group 1 viewed the film with a musical sound track; Group 2 heard no sound track. Determine if the sound track made a difference in the scores. Write a sentence summary of the results. $$\begin{array} { l c c } \text { Last Name } & \text { Group 1 } & \text { Group 2 } \\\hline \text { Blick } & 12 & 14 \\\text { Presbie } & 21 & 25 \\\text { Fox } & 18 & 19 \\\text { Hitt } & 21 & 20 \\\text { Carlson } & 17 & 20 \\\text { Boswell } & 13 & 16 \\\text { Howell } & 15 & 20 \\\text { Hendricks } & 24 & 26 \\\text { Dunlap } & 10 & 11 \\\text { Ward } & 9 & 8\end{array}$$