<prompt> Translate the following text to EnglishMazoezi katika Jedwali 2.1 yanaelezea kazi ambayo tunaweza kuulizwa kufanya na muundo kwa ajili yake na inakuomba kuamua kama hii ni utafiti wa kesi au la.  <response>: The exercise in table 2.1 describes a job we might be asked to do and a design for it and asks you to decide whether or not this is a case study. 