A teacher wants to see if a new unit on factoring is helping students learn. She has five randomly selected students take a pre-test and a post test on the material. The scores are out of 20. Has there been improvement? (pre-post)
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A teacher wants to see if a new unit on factoring is helping students learn. She has five randomly selected students take a pre-test and a post test on the material. The scores are out of 20. Has there been improvement? (pre-post)
| student | 1 | 2 | 3 | 4 | 5 |
| pre-test | 12 | 14 | 11 | 12 | 13 |
| post-test | 15 | 17 | 11 | 13 | 12 |
Test statistic equals -1.50. What's the p-value?
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