Use the tdistribution to nd a condence interval for a difference in meansm #2 given the relevant sample results. Give the best estimate form #2, the margin of error, and the condence interval. Assume the results come from random samples from populations that are approximately normally distributed. A9996 condenceintervalforyl ,u2 usingthe sample resultsil = 82.9,.\" = 12.53:] = 30 and 32 = 612,32 = 7.7,n2 = 20 Enter the exact answer for the best estimate and round your answers for the margin of error and the condence interval to two decimal places. Best estimate = 21.7 Margin of error = i 341 Condence interval : i 1329 to 30.11