[Expert Solution]: a) If 20 people died of cholera in Jakarta…

a) If 20 people died of cholera in Jakarta during the period of study, what was the case fatality rate (CFR) for cholera in this time period? ____________________ b) What is the odds ratio of contracting cholera by living in Kolkata versus living in Jakarta in this study? __________________ c) If at the beginning of Aug 2001, 44 people in Jakarta were already living with cholera, what is the prevalence rate at the beginning of the study period? ________________(%)