Use the t-distribution to find a confidence interval for a difference in means μ1-μ2 given the relevant sample results. Give the best estimate for #1-μ2, the margin of error, and the confidence interval. Assume the results come from random samples from populations that are approximately normally distributed A 90% confidence interval for μ 1-12 using the sample results-,-78.3, si-11 .7, ni = 35 and x2 = 64.4, s2-7.8, 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: