Problem 3. Some agency compares the highway MPG of Honda Civic and Chevy Cobalt. For each brand 100 cars are tested. The testing results are given below Civic: average MPG of the 100 cars = 35, the sample deviation=1.2 Cobalt: average MPG of the 100 cars = 32, the sample deviation=1.5 Could you provide an approximate 95% confidence interval for the difference of the average MPG of these two cars? Is zero inside your confidence interval