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use the t-distribution to find a confidence interval for a difference in means₁₂given the relevant sample results. Give the best estimate for₁₂, 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=76.6

, s1 = 11.7, n1 = 25 and

x2=63.2

, s2 = 8.5, 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 =

Enter your answer; Best estimate

Margin of error =

Enter your answer; Margin of error

Confidence interval :

Enter your answer; Confidence interval, value 1