Question

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 22.3 with a standard deviation of 3.6​, while the 200 students in group 2 had a mean score of 16.1 with a standard deviation of 3.8. Interpret the result of a 95% confidence interval. A. There is a 95​% probability that the difference of the means is in the interval. B. The researchers are 95​% confident that the difference of the means is in the interval. C. The researchers are 95​% confident that the difference between randomly selected individuals will be in the interval. D. There is a 95​% probability that the difference between randomly selected individuals will be in the interval.

Answer 1