A cardiologist is interested In the mean recovery period or her patients who have had heart attacks Item U the average recovery time of the randomly selected group 01 patients who had a heart attack t iii the recovery time a g the recovery time of one person who had a heart attack a ii a group of pattents who have had heart attacks randomly selected w a the average recovery time or all people who have heart attacks r u all patients who have had heart attacks Key Term a. statistic b. parameter c. variable :1. sample e. population f. data