A certain airline wishes to estimate the mean number of seats that are empty on flights that use 737-airplanes. There are189seats on a 737. To do so, the airline randomly picksn=37flights. For each flight, the number of empty seats is counted. The data are given below. 33, 23, 33, 27, 37, 29, 39, 36, 31, 47, 32, 29, 32, 37, 44, 40, 33, 38, 41, 38, 35, 26, 32, 34, 37, 38, 34, 36, 29, 35, 30, 37, 41, 27, 40, 37, 37.

\f