A charter bus line has 48-passenger buses and 38-passenger buses. With X and Y denoting the number of miles traveled per day for the 48-passenger and 38-passenger buses, respectively, the bus company is interested in testing the equality of the two distributions:
The company observed the following data on a random sample of n1 = 10 buses holding 48 passengers and n2 = 11 buses holding 38 passengers: