Interactive Statistics

3.9 In a study researchers examined some records of car crashes and recorded the gender of the driver at fault for each chash . The results were that more men are drivers in car crashes than women The researchers would like to conclude from this that men are poorer drivers than women . ( a) Is this study an observational study ( if so , which type ) or an experiment ? b) Identify the response variable and the explanatory variable. c) Give an example of two variables that could be confounding variables and should be taken into account before such a conclusion is stated