l) [5 pts] An insurance company would like to determine the proportion of all medical doctors who have been involved in one or more malpractice lawsuits. The company selects 500 doctors at random from a professional directory and find that 23% of them have been involved in a malpractice law suit. Identify the population sample, variable, and statistics. Population: Sample: __ Variable: ____ Is the variable Categorical or numerical? __ Statistic:___