Current Attempt in Progress Use the t-distribution to find a confidence interval for a difference in means M1 - /2 given the relevant sample results. Give the best estimate for /1 - /2, the margin of error, and the confidence interval. Assume the results come from random samples from populations that are approximately normally distributed. A 95% confidence interval for /1 - /2 using the sample results x1 = 76.8, s1 = 12.6, n1 = 30 and X2 = 67.4, s2 = 8.4, n2 = 20 Enter the exact answer for the best estimate and round your answers for the margin of error and the confidence interval to two decimal places. Best estimate = Margin of error = Confidence interval : to eTextbook and Media Save for Later Attempts: 0 of 3 used Submit