Use the sample information below and the t-distribution to find a 90% confidence interval for the difference in population means H1 H2. Assume the underlying distributions are approximately normal. = n = 100,X = 125.s 21.6 and n = 150, 112.32 = 18.4 State the value of r". Round your answers to three decimal places. 1 = 19.74 Confidence interval: i 8.656 to i 17.344