Homework: Ch 11 HW: Two Sample Procedure Question 13, 11.3.11 O O Par-t30f3 HW Score: 49.44%, 8.4 of 17 points O Points: O of 1 Save Two researchers conducted a study in which two groups ot students were asked to answer 42 trivia questions trom a board game. The students in group 1 were asked to spend 5 minutes thinking about what t would mean to be a professor, while the students in group 2 were asked to think about soccer hooligans. These pretest tnougnts are a form ot priming. The 200 students in group 1 had a mean score ot 21.6 witn a standard deviation ot 3.3, while the 200 students in group 2 had a mean score ot 19.2 witn a standard deviation ot 4.5. Complete pans (a) and (b) below. (a) Determine the 90% confidence interval tor the ditterence in scores, VII The lower bound is 1.749 The upper bound is 3.051 (Round to three decimal places as needed.) Interpret the interval. Choose the correct answer below Interpret the interval. The researchers are 90% confident that the difference of the means is in the interval. There is a 90% probability that the difference of the means is in the interval. The researchers are 90% confident that the difference between randomly selected individuals will be in the interval. 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 O O O A. B. C. D. Since the 90% confidence interval does not contain zero, the results suggest that priming does nave an effect on scores. Since the 90% confidence interval contains zero, the results suggest that priming does not nave an effect on scores. Since the 90% confidence interval contains zero, the results suggest that priming does nave an effect on scores. Since the 90% confidence interval does not contain zero, the results suggest that priming does not nave an effect on scores.