Question 1) Construct the indicated confidence interval for the population mean u using the t-distribution. Assume the population is normally distributed. C= 0.99, x= 13.1, s= 2.0, n=7 (Round to one decimal place as needed.) Question 2) In a random sample of 21 people, the mean commute time to work was 30.7 minutes and the standard deviation was 7.2 minutes. Assume the population is normally distributed and use a t-distribution to construct a 90% confidence interval for the population mean u. What is the margin of error of u? Interpret the results. The confidence interval for the population mean u is (].D). (Round to one decimal place as needed.) The margin of error of u is (Round to one decimal place as needed.) Interpret the results. O A. It can be said that 90% of people have a commute time between the bounds of the confidence interval. O B. With 90% confidence, it can be said that the population mean commute time is between the bounds of the confidence interval. O C. With 90% confidence, it can be said that the commute time is between the bounds of the confidence interval. O D. If a large sample of people are taken approximately 90% of them will have commute times between the bounds of the confidence interval