you are interested in purchasing a new car. one of the many points you wish to consider is the resale value of the car after 5 years of ownership. since you are particularly interested in a certain foreign sedan, you decide to estimate the resale value of this car with a 99% confidence interval. you manage to obtain data on 17 recently resold 5 year old foreign sedans of that model. these 17 cars were resold at an average price of $12,800 with a standard deviation of $600. what is the correct form of a 99% confidence interval for the true mean resale value of a 5 year old specific foreign sedan?