help me please

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 27 with a standard deviation of 4.6, while the 200 students in group 2 had a mean score of 19.8 with a standard deviation of 3.7. Complete parts (a) and (b) below (a) Determine the 90% confidence interval for the difference in scores, u - 2 Interpret the interval. The lower bound is The upper bound is (Round to three decimal places as needed.) Interpret the interval. Choose the correct answer below. O A. There is a 90% probability that the difference of the means is in the interval. O B. The researchers are 90% confident that the difference of the means is in the interval. O C. The researchers are 90% confident that the difference between randomly selected individuals will be in the interval. O D. There is a 90% probability that the difference between randomly selected individuals will be in the interval. (b) What does this say about priming? O A. Since the 90% confidence interval contains zero, the results suggest that priming does have an effect on scores. O B. Since the 90% confidence interval does not contain zero, the results suggest that priming does have an effect on scores. O C. Since the 90% confidence interval does not contain zero, the results suggest that priming does not have an effect on scores. O D. Since the 90% confidence interval contains zero, the results suggest that priming does not have an effect on scores