Question 1 1 pts The mean difference between a group of men and a group of women on extroversion was 2.8 points with a pooled standard error of 1.68. There were a total of 20 people in the study (10 men, 10 women). Create a 95% condence interval for the mean difference. Round to two decimal places and include signs (ex. -, +) 95% Lower Bound 95% Upper Bound Based on the condence interval above, you should ("reject" or "fail to reject") the null hypothesis