Construct a 95 percent confidence interval for the difference in the population mean?

37 jaialai players and 52 professional bowlers and finds that the mean incomes for the two groups, resoectively, are $73,000 and $89,000 while the standard deviations are $11,000 and $21,000. Construct a 95 percent confidence interval for the difference in the population mean income of the two groups.