Problem 6 The manager of a fleet of automobiles is testing two brands of radial tires and assigns one tire of each brand at random of eight cars and runs the cars until the tires wear out. The data (in kilometers) follow. Is there any difference in mean life of these two brands of tires? Enter this data in Minitab and do the calculation in Minitab. m- Brand 1 Brand 2 42,280 32,100 31,950 37,21 0 48,360 47,800 7 38,200 37,810 33,500 33.21 5 Is this samples independent or paired samples? Explain. Write Ho and H1 Calculate Test statisticsfl'). What is the critical value (T from tables)? What is your conclusions if d = 0.05? What is the pvaiue? What is your conclusions if a = 0.05 using pvaiue. \\1 P'P'F'P'P.' . Estimate with 90% confidence the different in the means. Which brand would you prefer based on this calculation