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 91 104 116 164 102 90

110 92 113 116 90 97 103 95 120 109 91 137

Fm: 123 116 90 159 122 119 125 90 96 94 136 102

105 106 95 125 122 103 96 111 83 113 128 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. (Enter numbers from smallest to largest separated by spaces. Enter NONE for stems with no values.)

American Stems French

______ 8 ________

_____ 9. ________

_______ 10 ________

_______ 11. ________

_______ 12. _________

________13. _________

________ 14 _________

_______ 15 __________

Comment on interesting features of the display. (Select all that apply.)

a. A typical French movie runs around 95 minutes, while American movies are typically either around 95 minutes or around 125 minutes.

b. Both American and French movies occasionally run very long.

c. A typical American movie runs around 95 minutes, while French movies are typically either around 95 minutes or around 125 minutes.

d.French movies are unimodal strongly positively skewed, while American movies appear to be bimodal.

e.French movies are generally shorter than American movies and are less variable in length.

f.American movies are unimodal strongly positively skewed, while French movies appear to be bimodal.

g.American movies are generally shorter than French movies.