QUESTION 1 A clinical trial into the effectiveness of a new pain relief medication was carried out. A total of 1,500 people took part in the trial, with 500 of them being immunodeficient. Out of the immunodeficient people, only 150 of them exhibited side-effects, compared to 400 in the control group. Please complete the contingency table, given this information: Side-effects No side-effects Total Immunodeficient 500 Control Total QUESTION 2 What is the prevalence of side-effects in the immunodeficient group? 0.100 0.300 0.333 0.273