Please use the information below to answer the question

In a sample of seven cars, each car was tested for nitrogen-oxide emissions (in grams per mile) and the following results were obtained: 0.06, 0.11, 0.16, 0.15, 0.14, 0.08, 0.15 (based on data from the EPA).

1. Assuming that this sample is representative of the cars in use, please construct a 98% confidence interval estimate of the mean amount of nitrogen-oxide emissions for all cars. The lower limit is approximately________ and the upper limit is ________. Round your results to the nearest thousandth.