The curb weight a in hundreds of pounds and braking distance y in feet, at 50 miles per hour on dry pavement, were measured for five vehicles, with the results shown in the table. x 25 27.5 32.5 35 45 y 105 125 140 140 150Give a point estimate for the average braking distance of automobiles that weigh 3,250 pounds. Construct the 80% confidence interval for that mean value. Is it valid to make the same estimates for 5,000-pound automobiles? Explain