Exercise D Consider query Q that has a total of 6 relevant results in the collection, and a search engine that returns results: rrxxxrxxr, where x is a relevant result and r is not relevant. 1. Compute Precision-at-5, Recall-at-5, F1-at-5, Average Precision, and DCG-at-5 (assuming relevant results have score 1 and non-relevant o). 2. Mention an application where higher precision is more important than higher recall and one for the opposite