>>20045446Two researchers conducted a study in which two groups of students were asked to answer 42 trivia questions from a board game. The students in group 1 were asked to spend 5 minutes thinking about what it would mean to be a professor, while the students in group 2 were asked to think about soccer hooligans.
These pretest thoughts are a form of priming.
The 200 students in group 1 had a mean score of 25.3 with a standard deviation of 4.2, while the 200 students in group 2 had a mean score of 16.2 with a standard deviation of 3.5.
Determine the 90% confidence interval for the difference in scores, mu 1 minus mu 2.
