The manager of a fleet of automobiles is testing two different brands of radial tires and assigns one tire of each brand at random to the two rear wheels of eight cars and runs the cars until the...

The manager of a fleet of automobiles is testing two different brands of radial tires and assigns one tire of each brand at random to the two rear wheels of eight cars and runs the cars until the tires wear out. The data, in kilometers, follow. Perform a hypothesis test at 0.05 level of significance. What is the Null and Alternative Hypthesis? Define the problem.

Brand 1: 36,925 45,300 36,240 32,100 37,210 48,360 38,200 33,500
Brand 2: 34,318 42,280 35,500 31,950 38,015 47,800 37,810 33,215