Do running times of American movies differ somehow from running times of French movies? The author investigated this question by randomly selecting 25 recent movies of each type, resulting in the following running times:
Am : 94, 90, 95, 93, 128, 95, 125, 91, 104, 116, 162
102, 90, 110, 92, 113, 116, 90, 97, 103, 95, 120,
109, 91, 138
Fr: 123, 116, 90, 158, 122, 119, 125, 90, 96, 94, 137
102, 105, 106, 95, 125, 122, 103, 96, 111, 81
113, 128, 93, 92
Construct a comparative stem-and-leaf display by listing stems in the middle of your paper and then placing the Am leaves out to the left and the Fr leaves out to the right. Then comment on interesting features of the display.