Sir i am stuck on this question

Question 8 5 points Save Answer The manager of a fleet of automobiles is testing two brands of radial tires. He assigns one tire of each brand at random to the two rear wheels of four cars and runs the cars until the tires wear out. He wants to see whether the performance of two tire brands are same (use a=0.20). The data (in kilometers) as follow. Car Brand 1 Brand 2 1 36,000 34,300 2 45,000 42,200 3 36,250 35,500 4 32,100 31,800 Once we calculate the test statistics, what would be result? 0.40 0.60 1.70 2.50 1.50