4) A study in Sweden looked at the impact of playing soccer on the incidence of arthritis of the hip or knee. They gathered information on former professional soccer players, people who played soccer but not professionally, and those who never played soccer. a) Does this study suggest that the more soccer you play, the greater the risk of arthritis of the hip or knee? ( Be sure to identify the explanatory and response variables to inform how you construct your fractions for comparison. Show your work.) Professional Non- Did not soccer professional play Column player soccer soccer Totals player Arthritis Yes 10 9 24 No 61 206 548 Row Totals b) What is the relative risk of developing arthritis if you play non-professional soccer? (Compare to the non-players.) Write a sentence that communicates the meaning of this number. c) What is the relative risk of developing arthritis if you play professional soccer? (Compare to the non-players.) Write a sentence that communicates the meaning of this number