Two 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 22.9 with a standard deviation of 4.1, while the 200 students in group 2 had a mean score of 18.4 with a standard deviation of 3.5.
Determine the 95% confidence interval for the difference in scores, μ1−μ2. Interpret the interval.
The lower bound is ?
The upper bound is?
Get Answers For Free
Most questions answered within 1 hours.