1. Suppose we are interested to predict the average tailpipe emissions of NO. (in 1b/yr) (NOX) per year for all car models using the sample that is given in the column NOX. One way to do this is to construct a confidence interval for the population mean tailpipe emission of NOX. Construct a 99% confidence interval for the mean tailpipe emission of NOX. Assume that the population of the tailpipe emission of NOX values are normally distributed. Find your point estimate, determine the sampling distribution, find the critical value, find the margin of error, and find the confidence interval. ii. Conclude the confidence interval