statistics

Among fatal plane crashes that occurred during the past 60 years, 604 were due to pilot error, 75 were due to other human error, 144 were due to weather, 442 were due to mechanical problems, and 76 were due to sabotage. Construct the relative frequency distribution. What is the most serious threat to aviation safety, and can anything be done about it? Complete the relative frequency distribution below. Cause Relative Frequency Pilot error % Other human error % Weather % Mechanical problems Sabotage % (Round to one decimal place as needed.)