Question
An annual marathon covers a route that has a distance of approximately 26 miles. Winning times...
An annual marathon covers a route that has a distance of approximately 26 miles. Winning times for this marathon are all over 2 hours. The following data are the minutes over 2 hours for the winning male runners over two periods of 20 years each.
| Earlier Period | |||||||||
|---|---|---|---|---|---|---|---|---|---|
| 15 | 19 | 16 | 10 | 7 | 13 | 10 | 22 | 16 | 9 |
| 13 | 15 | 16 | 20 | 22 | 14 | 18 | 23 | 12 | 17 |
| Recent Period | |||||||||
| 10 | 11 | 8 | 9 | 9 | 8 | 14 | 9 | 9 | 7 |
| 7 | 9 | 14 | 8 | 9 | 7 | 9 | 8 | 10 | 7 |
(a) Make a stem-and-leaf display for the minutes over 2 hours of the winning times for the earlier period. Use two lines per stem. (Use the tens digit as the stem and the ones digit as the leaf. Enter NONE in any unused answer blanks. For more details, view How to Split a Stem.)
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