Need right information thx

--( k15 2 x (n - 1) si V = 1 + (8.11) Example 8.5 Auditors (Confidence Interval) An accounting firm conducts a random sample of the accounts payable for the east and the west offices of one of its clients. From these two independent samples, the company wants to estimate the difference between the population mean values of the payables. The sample statistics obtained are as follows: Sample mean Sample size Sample standard deviation EAST OFFICE (POPULATION X) $290 16 15 WEST OFFICE (POPULATION Y) $250 11 50 We do not assume that the unknown population variances are equal. Estimate the dif- ference between the mean values of the payables for the two offices. Use a 95% confi- dence level