A unit coordinator conducted acase control study to explore if there was association between taking part in the end of semester 'Evaluate' survey (exposure) measured as yes/no, and overall performance measured as pass/fail (outcome). As per alternative hypothesis those who passed were more likely to have done their evaluate contribution than those who did not pass. A total of 2884 cases were chosen (those who passed) and a total of 4165 controls were chosen who did not pass. It was found that 904 cases had done the evaluate while only 336 controls took part in evaluate. Calculate a measure of association, suitable for this study design, to establish if there is infact a link between evaluate and pass grade). Though a 2x2 table will really help you to begin with, please provide only the final answer with two decimals (Use of brackets is recommended during calculation).