Problem 3 An engineer wishing to determine whether there is a statistically significant difference between the average speed of passenger cars and that of large trucks on a section of highway, collected the data shown below. Determine whether the engineer can conclude that the average speed of large trucks is the same as that for passenger cars. In other words, is the average speed of the large trucks significantly different than the average speed of the passenger cars? (0.50 pts) You must show your work. (0.50 pts)