Good afternoon, could someone explain to me what formula is used to solve this exercise, as well as how to know how much the H0 (null hypothesis) and H1 (alternative hypothesis) are worth, and how the values ??in the table are obtained the corresponding value

10.36 Engineers at a large automaker are trying to decide whether to buy brand A or brand B tires for their new models. In order to help them make a decision, an experiment is carried out using 12 tires of each brand. Tires are used until they wear out. The results are the following: Brand A: X = 37,900 kilometers, Brand B: X2= 39,800 kilometers. s1 = 5100 kilometers. $2 = 5900 kilometers.\f