Use the t-distribution to find a confidence interval for a difference in means ₁₂ given the relevant sample results. Give the best estimate for µ₁ - μ₂, 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 u ₂ using the sample results overline x_{1} = 8.5 s_{1} = 2.6 n_{1} = 50 and s_{2} = 5.3 n_{2} = 50 I overline x_{2} = 12 . 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