The table below summarizes the results of a survey of firefighters and other crisis responders (such as police, EMT, etc.) in the New York area. The table is used for the next three questions. No Alcohol Moderate to Severe Alcohol Row Problems Problems Totals Participated in 9/11 793 309 1,102 Rescue Did Not Participate in 441 110 551 9/11 Rescue Column Totals 1,234 419 1,653 Question 4 0 / 1.5 pts Do the firefighters and other "first responders" to the 9/11 crisis at the World Trade Center have a higher risk of alcohol-related problems? Which of the following calculations are the most helpful for answering this question? 309 / 1,653 and 110 / 1,653 309 / 419 and 110 / 419 309 / 419 and 110 / 419. You selected this answer. Incorrect. These are the conditional probabilities: P( 9/11 rescuer | alcohol problems) and P( not a 9/11 rescuer | alcohol problems). The condition is the same in both. We need to compare the rate of alcohol problems in the two conditions that are defined by the explanatory MacBook Pro