***Number each step 1-8 or 1-9 and show all work!!!!**
2. The braking distances for Ford Mustangs and Dodge Chargers were tested when traveling 65 mph when traveling in wet conditions. The mean braking distance for 9 randomly selected mustangs was 161 ft. with a standard deviation of 6.2 feet. The mean braking distance for 11 randomly selected chargers was 179 ft with a standard deviation of 3.1 ft. Can you conclude there is a difference in braking distances for these two types of cars at a significance level of 0.01?