In an effort to determine whether a new type of fertilizer is more effective than the type currently in use, researchers took 12 2 acre plots of land scattered throughout he country, Each plot was divided into two equal size subplots, one of which was treated with the current fertilizer and the other of which was treated with the new fertilizer. wheat was planted and the crop yields were measured

6. in an effort to determine whether a new type of fertilizer is more effective than the type currently in use, researchers took 12 Z-acre plots of land scattered throughout the country. Each plot was divided into two equal-size subplots, one of which was treated with the current fertilizer and the other of which was treated with the new fertilizer. Wheat was planted, and the crop yields were measured. New a. (5 points) Can we conclude at the 5% significance level that the new fertilizer is more effective than the current one? (you may use the empty rows in the table to assist your calculations). Define what us represents: :lel Conclusion: b. (5 points) What is (are) the required condition(s) for the validity of the result obtained in part a)? Are they satisfied? (you may use a clotplot or a histogram to assist your conclusion)