Construct the indicated confidence interval for the difference between the two population means. Suppose the two samples are independent simple random samples selected from normally distributed populations. Do not assume that the population standard deviations are equal. Two types of flares are tested and the burn times are recorded. Summary statistics are given below. Type X Type Y Construct a 95% confidence interval for the differences between the mean burn duration of flare type X and the mean burn duration of flare type Y. 3.5 min < X - Y < 5.1 min 3.2 min < X - Y < 5.4 min