3. A researcher for the FAA wants to estimate the average flight time (in minutes) from Albuquerque, New Mexico, to Dallas, Texas, for flights with American Airlines. He randomly selects 8 flights between the two cities and obtains the data shown. (9 points) 120 95 109 103 110 95 100 99 a) Use the data above to find sample mean and sample standard deviation. Please include correct mathematical symbols for both. (3 pts) (You do NOT need to show work for this part. You may get these answers directly from the calculator. Writing only answers for this part is ok.) b) Assume that the flight time is approximately normally distributed. Construct a 95% confidence interval for the flight time. (4 points) c) In a complete sentence, interpret the 95% confidence interval you obtained in (b) (2 points)