Suppose the California State Highway Patrol conducted a study on a stretch of interstate highway south of San Francisco to determine what differences, if any, existed in driving speeds of cars licensed in California and cars licensed out of state. One of the issues to be examined was whether there was a difference in the variability of driving speeds for California and out-of-state cars. The data file Speed-Test contains speeds of 140 randomly selected California cars and 75 randomly selected outof-

state cars. Based on these sample results, can you conclude at the 0.05 level of significance that there is a difference between the variations in driving speeds?