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Question
A recent study was conducted to determine if any of three suppliers of electronic components has a different median delivery time on special orders. To test this, five orders were given to each supplier and the delivery days were recorded. These data are shown as follows:
| Supplier 1 | Supplier 2 | Supplier 3 |
| 15 | 11 | 15 |
| 19 | 7 | 9 |
| 13 | 19 | 5 |
| 10 | 10 | 12 |
| 20 | 12 | 10 |
If a Kruskal-Wallis test is to be performed, the sum of the rankings for Supplier 1 is 45.
Answer
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