Score: 0 of 1 pt 12 of 13 (10 complete) HW Score: 76.92%, 10 of 13 6.2. 17-T Question Help In a random sample of 18 people, the mean commute time to work was 34.8 minutes and the standard deviation was 7.1 minutes. Assume the population is normally distributed and use a t-distribution to construct a 80% confidence interval for the population mean u. What is the margin of error of p? Interpret the results. The confidence interval for the population mean p is (D) (Round to one decimal place as needed.)