For items 25 to 26: A farmer has decided to use a new additive to grow his crops. He divided his farm into 10 plots and kept records of the corn yield (in bushels) before and after using the additive....

Extracted text: For items 25 to 26: A farmer has decided to use a new additive to grow his crops. He divided his farm into 10 plots and kept records of the corn yield (in bushels) before and after using the additive. The results are shown below. PLOT 1 4 6. 9. 10 BEFORE 9 9. 8. 7. 8. 9. 10 11 AFTER 10 9. 9. 8. 10 10 10 12 You wish to test the following hypothesis at the 10 percent level of significance. Ho: HD = 0 vs HA: HD # 0. 25. What is the value of the appropriate test statistic? A. 2.536 B. 5.014 C. 2.033 D. 1.584 26. What can you conclude about the new additive? A. There is enough evidence that the additive is not effective in growing corns. B. There is no difference between the yield of corn before and after applying the additive. C. There is not enough evidence that the additive is effective in growing corn. D. The additive has increased the yield of corn. 567