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Question
The following independent samples show the delivery times for two suppliers of raw materials (in days). A company currently uses Supplier A but will switch to Supplier B if its average delivery time is less than that for Supplier A. Use Excel to conduct the appropriate hypothesis test. Use
= .10.| Supplier A | Supplier B | ||
| 10 | 12 | 3 | 6 |
| 13 | 13 | 15 | 4 |
| 12 | 14 | 7 | 6 |
| 14 | 10 | 2 | 4 |
| 14 | 8 | 18 | 16 |
| 12 | 8 | 20 | 18 |
| 10 | 12 | 9 | 4 |
| 5 | 8 | ||
Answer
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