Construct an 80% confidence interval estimate for the difference between two population means given the sample data below selected from two normally distributed populations with equal variances. Sample 1 Sample 2 23 33 27 36 38 43 36 31 29 31 43 31 32 28 23 37 35 37 Question content area bottom Part 1 The 80% confidence interval is enter your response hereless than or equals(mu 1minusmu 2)less than or equals enter your response here. (Round to two decimal places as needed.)