Please use the dfwelch method to calculate the degrees of freedom. Please show all the work.

Delay in discharge . Delays in discharges from intermediate healthcare facilities create unnecessary risks and expenses for patients and their families. Discharge delays (in days) from two healthcare facilities are shown in the following table. Assume that these data represent SRSs from their respective populations and | that the populations demonstrate no major departures from Normality. Compare delay times in the facilities and test whether there was significant difference in the mean delay times. Delays in Discharge (days) Facility A: 12 9 13 16 7 19 20 16 15 14 12 16 Facility B: 7 10 13 15 9 15 12 16 8 9 6 12